Pod Security compliance: dns-operator

dns-operator must comply to restricted pod security level. The current audit warning is:

{   "objectRef": "openshift-dns-operator/deployments/dns-operator",   "pod-security.kubernetes.io/audit-violations": "would violate PodSecurity \"restricted:latest\": allowPrivilegeEscalation != false (containers \"dns-operator\", \"kube-rbac-proxy\" must set securityContext.allowPrivilegeEscalation=false), unre stricted capabilities (containers \"dns-operator\", \"kube-rbac-proxy\" must set securityContext.capabilities.drop=[\"ALL\"]), runAsNonRoot != true (pod or containers \"dns-operator\", \"kube-rbac-proxy\" must set securityContext.runAsNonRoot=tr ue), seccompProfile (pod or containers \"dns-operator\", \"kube-rbac-proxy\" must set securityContext.seccompProfile.type to \"RuntimeDefault\" or \"Localhost\")" }