Error

Fix the following errors: * Error "failed calling webhook "smcp.mutation.maistra.io": failed to call webhook: Post "https://istio-operator-service.openshift-operators.svc:443/mutate-smcp?timeout=10s": no endpoints available for service "istio-operator-service"" for field "undefined".

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//edit:
With the latest build of OSSM 2.6 (openshift-service-mesh-istio-operator-bundle:2.6.0-33), the TestMustGather test fails (with all SMCP's, so probably issue in operator) on:
issue:

bug_multiple_smcp_test.go:44: STEP 2: Delete the operator's ValidationWebhookConfiguration
...

bug_multiple_smcp_test.go:54: STEP 5: Create the second SMCP
setup.go:114:    FATAL: Command failed: oc -n istio-system apply -f -
    Error from server (BadRequest): error when creating "STDIN": admission webhook "smcp.validation.maistra.io" denied the request: only one service mesh may be installed per project/namespace
    error: exit status 1
test.go:77: 

It is probably related to some change in the operator or OCP 4.16 since the test deletes ValidationWebhookConfiguration in previous step so this validation error message should not appear during creating the second SMCP