Expand system tests to cover all join flags

[dfarrell07]

Some flags, like the cable driver, are currently not covered by system tests.

https://github.com/submariner-io/submariner-operator/blob/devel/scripts/test/system.sh

Look into flags that we set via join and expect a result in K8s objects, verify at a system test level they are actually set.

[stale]

This issue has been automatically marked as stale because it has not had activity for 60 days. It will be closed if no further activity occurs. Please make a comment if this issue/pr is still valid. Thank you for your contributions.

[stale]

This issue has been automatically marked as stale because it has not had activity for 60 days. It will be closed if no further activity occurs. Please make a comment if this issue/pr is still valid. Thank you for your contributions.

[tpantelis]

I think this would be suitable for unit tests.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further
activity occurs. Thank you for your contributions.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further
activity occurs. Thank you for your contributions.