Pod security violation in metrics-related end-to-end tests

[rhmdnd]

If you run the end-to-end tests, you can see a warning about the security privileges for the metrics-test container, which a couple of the tests use to fetch metrics before validating them.

CONT  TestE2E/Parallel_tests/TestSingleScanSucceeds
    helpers.go:2539: metrics output:
        Warning: would violate PodSecurity "restricted:latest": allowPrivilegeEscalation != false (container "metrics-test"
        must set securityContext.allowPrivilegeEscalation=false), unrestricted capabilities (container "metrics-test" must
        set securityContext.capabilities.drop=["ALL"]), runAsNonRoot != true (pod or container "metrics-test" must set
        securityContext.runAsNonRoot=true), seccompProfile (pod or container "metrics-test" must set
        securityContext.seccompProfile.type to "RuntimeDefault" or "Localhost")