SystemVM agent fails TLS to management server

## SystemVM agent fails TLS to management server — keystore-cert-import silently exits 0, leaving cloud.jks without trustedCertEntry (VMware, 4.22)

### problem

After a fresh system VM (ConsoleProxy / SecondaryStorageVm) boots, its agent cannot complete the TLS handshake with the management server on port 8250. The console proxy never binds its public HTTP/HTTPS listener (browser gets `ERR_CONNECTION_REFUSED` on the public IP), the SSVM never registers as a host, and ACS keeps destroying and re-creating the system VMs — each replacement exhibits the same failure.

Root cause: on the VMware SSH dispatch path, `SetupCertificateCommand` invokes `scripts/util/keystore-cert-import` **without** positional arguments `$7` (CACERT_FILE path) and `$8` (CACERT content). The script then falls through to the `elif [ ! -f "$CACERT_FILE" ]` branch and calls a bare `exit` — which returns **exit code 0**. The management server receives `SetupCertificateAnswer: result=true` and believes the push succeeded. In reality the `awk ... "$CACERT_FILE"` and the subsequent `keytool -import -trustcacerts -alias cloudca` calls never run, so the CA certificate is never added to `cloud.jks` as a `trustedCertEntry`.

Evidence observed on the affected deployment.

Management-server log, every ~10s while the system VM is Running:
```
ERROR [c.c.u.n.Link] (AgentManager-SSLHandshakeHandler-1:[])
SSL error caught during unwrap data: (certificate_unknown)
Received fatal alert: certificate_unknown,
for local address=/:8250, remote address=/:xxxxx.
The client may have invalid ca-certificates.
```

System VM `/var/log/cloud.log`, reciprocally:
```
ERROR [utils.nio.Link] SSL error caught during wrap data:
No trusted certificate found, for local address=/:xxxxx,
remote address=/:8250.
```

Keystore inspection inside the VM (using the passphrase stored in agent.properties):
```
$ keytool -list -keystore /usr/local/cloud/systemvm/conf/cloud.jks \
-storepass "$(sed -n 's/^keystore.passphrase=//p' /usr/local/cloud/systemvm/conf/agent.properties)"
Your keystore contains 1 entry
cloud, , PrivateKeyEntry, ...
```

Only the leaf `PrivateKeyEntry` is present — no `trustedCertEntry` for the root CA. The file `/usr/local/cloud/systemvm/conf/cloud.ca.crt` is correctly written on disk (byte-for-byte identical to the live MS root CA), but Java does not read loose PEM files on disk; it only trusts entries inside `cloud.jks`.

The relevant piece of `scripts/util/keystore-cert-import` in 4.22.0.0:
```bash
CACERT_FILE="$7"
CACERT=$(echo "$8" | tr '^' '\n' | tr '~' ' ')
...
# Import ca certs
if [ ! -z "${CACERT// }" ]; then
echo "$CACERT" > "$CACERT_FILE"
elif [ ! -f "$CACERT_FILE" ]; then
echo "Cannot find ca certificate file: $CACERT_FILE, exiting!"
exit # <-- bare exit -> exit 0 -> MS sees success
fi

awk '/-----BEGIN CERTIFICATE-----?/{n++}{print > "cloudca." n }' "$CACERT_FILE"
for caChain in $(ls cloudca.*); do
keytool -delete -noprompt -alias "$caChain" -keystore "$KS_FILE" -storepass "$KS_PASS" > /dev/null 2>&1 || true
keytool -import -noprompt -storepass "$KS_PASS" -trustcacerts -alias "$caChain" -file "$caChain" -keystore "$KS_FILE" > /dev/null 2>&1
done
```

Example arguments actually logged by MS for a `v-26-VM` `SetupCertificateCommand` dispatch (6 positional args, not 10):
```
Run command on VR: , script: keystore-cert-import with args:
/usr/local/cloud/systemvm/conf/agent.properties
/usr/local/cloud/systemvm/conf/cloud.jks
ssh
/usr/local/cloud/systemvm/conf/cloud.crt
"-----BEGIN~CERTIFICATE-----^...leaf cert content..."
```

`$7` (CACERT_FILE) and `$8` (CACERT content) are absent.

### versions

- Apache CloudStack: 4.22.0.0 (package `cloudstack-management-4.22.0.0-shapeblue0`, ShapeBlue RPM build)
- Management server host OS: Rocky Linux 10.0
- Management server JDK: OpenJDK 21.0.10 (for `cloudstack-management.service`)
- SystemVM template: `systemvmtemplate-4.22.0-x86_64-vmware.ova` (official 4.22.0 vSphere OVA, built Tue Oct 14 11:01:03 UTC 2025)
- SystemVM guest OS: Debian 12 (bookworm), OpenJDK 17.0.16 (`keytool` as shipped in the image)
- Hypervisor: VMware vSphere (ESXi cluster, 6 hosts)
- Primary storage: VMFS
- Secondary storage: NFS
- Network: VMware DVS, shared Public VLAN for system VMs, Basic zone networking
- CA framework: `ca.framework.provider.plugin=root`, `ca.plugin.root.auth.strictness=false`

### The steps to reproduce the bug

1. Install Apache CloudStack 4.22.0.0 management server on a clean host (e.g. Rocky 10).
2. Register a VMware zone and upload the official `systemvmtemplate-4.22.0-x86_64-vmware.ova` as the SystemVM template (type `SYSTEM`).
3. Let ACS auto-provision the ConsoleProxy and SecondaryStorageVm for that zone.
4. Wait ~1 minute after both system VMs reach `state=Running`, `power_state=PowerOn`.
5. Observe in `management-server.log` that `SetupCertificateCommand` is dispatched via the VMware SSH path and returns `SetupCertificateAnswer: result=true`.
6. Despite that "success", `management-server.log` keeps emitting `SSL error caught during unwrap data: (certificate_unknown) Received fatal alert: certificate_unknown, ... remote address=/:xxxxx` every ~10 s.
7. SSH into the system VM on port 3922 using the MS key (`/var/cloudstack/management/.ssh/id_rsa`) and run:
```
PASS=$(sed -n 's/^keystore.passphrase=//p' /usr/local/cloud/systemvm/conf/agent.properties)
keytool -list -keystore /usr/local/cloud/systemvm/conf/cloud.jks -storepass "$PASS"
```
Expected (buggy) output: the keystore contains exactly 1 entry (`cloud`, `PrivateKeyEntry`) — no `trustedCertEntry`.
8. Verify `/usr/local/cloud/systemvm/conf/cloud.ca.crt` exists on disk and matches the MS root CA (same serial as `ca.plugin.root.ca.certificate` in the `configuration` table), but it was never imported into the keystore.
9. Result: the agent never completes TLS, the host never reaches `Up`, and the console proxy never opens its public HTTP listener — browser hits `ERR_CONNECTION_REFUSED` on the system VM public IP.

### What to do about it?

Two fixes, ideally both.

**A. Primary — ensure the VMware SSH dispatch of `SetupCertificateCommand` passes the CA args.**

The dispatch path that invokes `scripts/util/keystore-cert-import` needs to also pass positional arguments `$7` (`/usr/local/cloud/systemvm/conf/cloud.ca.crt`) and `$8` (CA certificate content, same `^`/`~`-encoded form used for the leaf cert in `$6`). The CA material is already available in the `Certificate` object used by `CAManagerImpl` (see `server/src/main/java/org/apache/cloudstack/ca/CAManagerImpl.java` around the `SetupCertificateCommand cmd = new SetupCertificateCommand(certificate)` call) and in `ca.plugin.root.ca.certificate` in the `configuration` table — it just isn't being carried into the script invocation on the VMware SSH path.

Relevant files:
- `core/src/main/java/org/apache/cloudstack/ca/SetupCertificateCommand.java` — command payload; may need to explicitly carry the CA certificate to the VR path.
- `server/src/main/java/org/apache/cloudstack/ca/CAManagerImpl.java` — where the command is built; has the `Certificate` object with CA material.
- `plugins/hypervisors/vmware/src/main/java/com/cloud/hypervisor/vmware/resource/VmwareResource.java` — VMware `executeInVR` dispatch; check the branch that handles `SetupCertificateCommand` and routes it to `keystore-cert-import`.

**B. Secondary — make `scripts/util/keystore-cert-import` fail loud, with a safe disk fallback.**

Current (buggy) behaviour:
```bash
elif [ ! -f "$CACERT_FILE" ]; then
echo "Cannot find ca certificate file: $CACERT_FILE, exiting!"
exit
fi
```

Suggested patch:
```diff
- elif [ ! -f "$CACERT_FILE" ]; then
- echo "Cannot find ca certificate file: $CACERT_FILE, exiting!"
- exit
- fi
+ elif [ ! -f "$CACERT_FILE" ]; then
+ # Fall back to the CA cert that cloud-early-config placed on disk.
+ if [ -f /usr/local/cloud/systemvm/conf/cloud.ca.crt ]; then
+ CACERT_FILE=/usr/local/cloud/systemvm/conf/cloud.ca.crt
+ else
+ echo "Cannot find ca certificate file; neither arg \$7 nor /usr/local/cloud/systemvm/conf/cloud.ca.crt available, aborting!" >&2
+ exit 1
+ fi
+ fi
```
A non-zero exit lets the management server see the failure (today, `SetupCertificateAnswer.result=true` completely masks it). The disk fallback is defense-in-depth against future dispatch-side regressions of this same shape.

**Workaround currently in use on the affected deployment (for anyone hitting this before a fix is merged):**
For each system VM, extract the existing leaf key+cert with `openssl pkcs12`, rebuild the PKCS12 with `openssl pkcs12 -export ... -certfile cloud.ca.crt`, then `keytool -import -noprompt -trustcacerts -alias cloudca -file cloud.ca.crt -keystore cloud.jks -storepass `, then `systemctl restart cloud`. Note: the `keytool` shipped in the 4.22 systemvm template (OpenJDK 17.0.16, Debian 12) rejected `-import` of both PEM and DER forms of the CA with `CertificateParsingException: signed overrun, bytes = 115`, so the rebuilt keystore had to be generated on the management server (OpenJDK 21) and copied back. That broken `keytool -import` behaviour on the systemvm image may deserve a separate issue.

SetupCertificateCommand.java と CAManagerImpl.java から始めて証明書ペイロードを追跡し、その後 VmwareResource.java の SetupCertificateCommand ブランチと scripts/util/keystore-cert-import を調べます。VMware SSH ディスパッチを再現またはテストし、CA 引数がスクリプトに到達すること、CA 入力がない場合にゼロ以外で失敗するか文書化されたディスクフォールバックを使用すること、そして cloud.jks に trustedCertEntry が追加されることを確認します。

索引モデルが issue の本文から書いたものです。