TestNSXVPCIPManager suite has flake tests.

[zhanggbj]

Which jobs are flaking?

pull-cloud-provider-vsphere-coverage

Which tests are flaking?

--- FAIL: TestNSXVPCIPManager_ClaimPodCIDR (0.00s)
--- PASS: TestNSXVPCIPManager_ClaimPodCIDR/Claim_Public_PodCIDR_Successfully (0.00s)
--- PASS: TestNSXVPCIPManager_ClaimPodCIDR/Claim_Private_PodCIDR_Successfully (0.00s)
--- PASS: TestNSXVPCIPManager_ClaimPodCIDR/Node_PodCIDR_Already_Set (0.00s)
--- PASS: TestNSXVPCIPManager_ClaimPodCIDR/Fail_to_create_IPAddressAllocation (0.00s)
--- FAIL: TestNSXVPCIPManager_ClaimPodCIDR/IPAddressAllocation_Already_Exists (0.00s)
=== RUN TestNSXVPCIPManager_ReleasePodCIDR
=== RUN TestNSXVPCIPManager_ReleasePodCIDR/IPAddressAllocation_Not_Found
=== RUN TestNSXVPCIPManager_ReleasePodCIDR/Delete_IPAddressAllocation_Successfully
=== RUN TestNSXVPCIPManager_ReleasePodCIDR/Delete_IPAddressAllocation_Fail
--- PASS: TestNSXVPCIPManager_ReleasePodCIDR (0.00s)
--- PASS: TestNSXVPCIPManager_ReleasePodCIDR/IPAddressAllocation_Not_Found (0.00s)
--- PASS: TestNSXVPCIPManager_ReleasePodCIDR/Delete_IPAddressAllocation_Successfully (0.00s)
--- PASS: TestNSXVPCIPManager_ReleasePodCIDR/Delete_IPAddressAllocation_Fail (0.00s)
FAIL
coverage: 40.8% of statements
FAIL k8s.io/cloud-provider-vsphere/pkg/cloudprovider/vsphereparavirtual/nsxipmanager 0.484s

Since when has it been flaking?

First time occurred during bump to k8s 1.32.0 release
#1348
https://prow.k8s.io/view/gs/kubernetes-ci-logs/pr-logs/pull/cloud-provider-vsphere/1348/pull-cloud-provider-vsphere-coverage/1867133487048298496

Testgrid link

No response

Reason for failure (if possible)

No response

Anything else we need to know?

No response

Relevant SIG(s)

/sig