[2133660] [pod security violation audit] Audit violation in "cdi-source-update-poller" container should be fixed

Description of problem:
-----------------------
Test run[1] that looks for 'pod security violation entries' in audit logs,against 4.11.1-20, found few audit violation.

[1] - https://main-jenkins-csb-cnvqe.apps.ocp-c1.prod.psi.redhat.com/view/cnv-tests%20runner/job/cnv-tests-runner/4297/consoleFull.

This bug is to fix violation in 'cdi-source-update-poller' container.

<snip>
'pod-security.kubernetes.io/audit-violations': 'would violate PodSecurity "restricted:latest": allowPrivilegeEscalation != false (container "cdi-source-update-poller" must set securityContext.allowPrivilegeEscalation=false), unrestricted capabilities (container "cdi-source-update-poller" must set securityContext.capabilities.drop=["ALL"]), runAsNonRoot != true (pod or container "cdi-source-update-poller" must set securityContext.runAsNonRoot=true), seccompProfile (pod or container "cdi-source-update-poller" must set securityContext.seccompProfile.type to "RuntimeDefault" or "Localhost")'}}
</snip>

Version-Release number of selected component (if applicable):
-------------------------------------------------------------
4.11.1-20

How reproducible:
-----------------
Always

Expected results:
-----------------
No audit-violation to be found