Add tests for VPC Endpoint Service Configuration cleanup

[NautiluX]

jira: OSD-10055

[NautiluX]

/assign @dkeohane

[openshift-ci[bot]]

@NautiluX: all tests passed!

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[codecov-commenter]

Codecov Report

Merging #677 (2f630a6) into master (17d734a) will decrease coverage by 0.03%. The diff coverage is 12.84%.

@@            Coverage Diff             @@
##           master     #677      +/-   ##
==========================================
- Coverage   31.49%   31.46%   -0.04%     
==========================================
  Files          47       48       +1     
  Lines        4683     4783     +100     
==========================================
+ Hits         1475     1505      +30     
- Misses       3110     3180      +70     
  Partials       98       98              

Impacted Files	Coverage Δ
pkg/controller/accountclaim/mock/cr-client.go	4.25% <4.25%> (ø)
...controller/accountclaim/accountclaim_controller.go	21.51% <50.00%> (+1.09%)	:arrow_up:
pkg/controller/accountclaim/reuse.go	41.24% <100.00%> (+7.66%)	:arrow_up:

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dkeohane, NautiluX

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