ansible: repurpose test-ibm-ubuntu2204-x64-2

[richardlau]

Repurpose test-ibm-ubuntu2204-x64-2 as test-ibm-rhel9-x64-2 to rebalance the number of machines per Linux distribution.

[richardlau]

Applying this to the machine now (in progress).

I had a weird error:

TASK [bootstrap : register Red Hat subscription] ****************************************************************************************************************************************************************
fatal: [test-ibm-rhel9-x64-2]: FAILED! => {"changed": false, "msg": "Failed to register with 'None': com.redhat.RHSM1.Error: {\"exception\": \"DBusException\", \"severity\": \"error\", \"message\": \"This system is already registered.\"}"}

which was misleading (already being registered shouldn't cause the task to fail) and actually caused by bad/incomplete DNS settings. I copied /etc/resolv/conf settings from test-ibm-rhel9-x64-1 which fixed the error. I don't recall having to manually fix the other rhel9 machines or IBM hosted machines, but recording this here so it's searchable if it reoccurs.

[richardlau]

Machine has picked up https://ci.nodejs.org/job/node-test-commit-linux/nodes=rhel9-x64/60603/
(will probably take hours since no populated ccache yet).