testing(fxconfig): add TLS to integration tests

Currently we run the fxconfig integration tests without TLS.

In order to support this, we can override the TLS configuration of the committer components via https://github.com/hyperledger/fabric-x/blob/main/tools/fxconfig/integration/helpers_test.go#L86

For example:

```
"SC_ORDERER_SERVER_TLS_MODE": "tls",
"SC_ORDERER_SERVER_TLS_CERT_PATH": fmt.Sprintf("/root/artifacts/crypto/ordererOrganizations/OrdererOrg/orderers/orderer.orderer.com/tls/server.crt"),
"SC_ORDERER_SERVER_TLS_KEY_PATH": fmt.Sprintf("/root/artifacts/crypto/ordererOrganizations/OrdererOrg/orderers/orderer.orderer.com/tls/key.crt"),
"SC_ORDERER_SERVER_TLS_CA_CERT_PATHS_[0]": fmt.Sprintf("/root/artifacts/crypto/peerOrganizations/Org1/tlsca/tlsca.org1.com-cert.pem"),
"SC_ORDERER_SERVER_TLS_CA_CERT_PATHS_[1]": fmt.Sprintf("/root/artifacts/crypto/peerOrganizations/Org1/tlsca/tlsca.org2.com-cert.pem"),
"SC_ORDERER_SERVER_TLS_CA_CERT_PATHS_[2]": fmt.Sprintf("/root/artifacts/crypto/peerOrganizations/Org1/tlsca/tlsca.org3.com-cert.pem"),
...
```

However, the syntax for the CA_CERT_PATHs is not correct. @cendhu can you give a hint here please.