test: add cluster name support test scenario

test: add cluster name support test scenario

We need to test the cluster name support in this CI as well. This
commit might be prone to debate because it tests 2 things in a single
scenario. We first test our ability to deploy a cluster AND the cluster
name support. However it's easier to do it this way and will reduce the
amount of time for testingg. If we don't do this we will have a
duplicate those 2 existing tests into new ones 'only' to test the
cluster name support.

Signed-off-by: Sébastien Han <seb@redhat.com>