RFE: Ignore none existing resource when trying to delete

[rabin-io]

ccoctl delete-service-id and openshift-install destroy cluster can fail when IBM Cloud resources (service IDs, resource groups) are already gone.

Add the option --ignore-if-missing so the script can exit cleanly if nothing to remove.

[openshift-ci]

Issues go stale after 90d of inactivity.

Mark the issue as fresh by commenting /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.
Exclude this issue from closing by commenting /lifecycle frozen.

If this issue is safe to close now please do so with /close.

/lifecycle stale

[rabin-io]

/remove-lifecycle stale

[rabin-io]

/lifecycle frozen

Until we get any kind of answer.