Cleanup of active VPC Endpoint Services

If the HyperShift operator is installed onto a cluster, it creates VPC Endpoint Services fronting the hosted Kubernetes API Server for downstream HyperShift clusters to connect to. These VPC Endpoint Services are tagged such that the uninstaller would attempt to action them:

"kubernetes.io/cluster/${ID}: owned"

However they cannot be deleted until all active VPC Endpoint Connections are rejected - the uninstaller should be able to do this.

4.12 (but shouldn't be version-specific)

100%

1. Create an NLB + VPC Endpoint Service in the same VPC as a cluster
2. Tag it accordingly and create a VPC Endpoint connection to it

The uninstaller will not be able to delete the VPC Endpoint Service + the NLB that the VPC Endpoint Service is fronting

The VPC Endpoint Service can be completely cleaned up, which would allow the NLB to be cleaned up