ha/virsh: enp2s0 is not part of netplan so does not come up on reboot && iscsi does not automatically login

When initially setting up with the following command: `./setup-cluster.sh --iscsi-shared-device`

I see
```
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
loop0 7:0 0 63.4M 1 loop /snap/core20/1974
loop1 7:1 0 111.9M 1 loop /snap/lxd/24322
loop2 7:2 0 53.3M 1 loop /snap/snapd/19457
sda 8:0 0 1G 0 disk
└─mpatha 253:0 0 1G 0 mpath
sdb 8:16 0 1G 0 disk
└─mpatha 253:0 0 1G 0 mpath
vda 252:0 0 10G 0 disk
├─vda1 252:1 0 9.9G 0 part /
├─vda14 252:14 0 4M 0 part
└─vda15 252:15 0 106M 0 part /boot/efi
vdb 252:16 0 366K 0 disk
vdc 252:32 0 1G 0 disk
ubuntu@ha-agent-virsh-j-multipath-tools-test-node01:~$ ip a
1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp1s0: mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether 52:54:00:5f:af:42 brd ff:ff:ff:ff:ff:ff
inet 192.168.122.79/24 metric 100 brd 192.168.122.255 scope global dynamic enp1s0
valid_lft 3256sec preferred_lft 3256sec
inet6 fe80::5054:ff:fe5f:af42/64 scope link
valid_lft forever preferred_lft forever
3: enp2s0: mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether 52:54:00:22:3c:75 brd ff:ff:ff:ff:ff:ff
inet 192.168.30.106/24 brd 192.168.30.255 scope global dynamic enp2s0
valid_lft 3429sec preferred_lft 3429sec
inet6 fe80::5054:ff:fe22:3c75/64 scope link
valid_lft forever preferred_lft forever
```
This all looks good, but on reboot enp2s0 is not up, and we need to manually login to iscsi.

After a reboot the following is seen:
```
ubuntu@ha-agent-virsh-j-multipath-tools-test-node01:~$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
loop0 7:0 0 111.9M 1 loop /snap/lxd/24322
loop1 7:1 0 63.4M 1 loop /snap/core20/1974
loop2 7:2 0 53.3M 1 loop /snap/snapd/19457
vda 252:0 0 10G 0 disk
├─vda1 252:1 0 9.9G 0 part /
├─vda14 252:14 0 4M 0 part
└─vda15 252:15 0 106M 0 part /boot/efi
vdb 252:16 0 366K 0 disk
vdc 252:32 0 1G 0 disk
ubuntu@ha-agent-virsh-j-multipath-tools-test-node01:~$ ip a
1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp1s0: mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether 52:54:00:5f:af:42 brd ff:ff:ff:ff:ff:ff
inet 192.168.122.79/24 metric 100 brd 192.168.122.255 scope global dynamic enp1s0
valid_lft 3545sec preferred_lft 3545sec
inet6 fe80::5054:ff:fe5f:af42/64 scope link
valid_lft forever preferred_lft forever
3: enp2s0: mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 52:54:00:22:3c:75 brd ff:ff:ff:ff:ff:ff
```

The fix is to manually run:
```
sudo dhclient enp2s0
sudo iscsiadm -m node --login
```

But it would be nice for this to automatically be done for tests that require reboots.