Refactor CRIDGE CR deletion

• KubernetesClientResource.deleteCR() must not delete the NS's resources
• CRRouteBuilder.processNameSpacesTobeDeleted()
  • time diff comparison to 10'
  • check if there are CRs with OpenSlice labels and don't delete ns, if this is the case (example)

added statusconfirmed typeenhancement labels

assigned to @tranoris

added to epic osl&6

created branch 20-refactor-cridge-cr-deletion to address this issue

mentioned in merge request !19 (merged)

mentioned in commit 33f1416a

added statusunder review label and removed statusconfirmed label

mentioned in commit 3ade71cf

mentioned in merge request !20 (merged)

removed statusunder review label

closed