Remove `would violate PodSecurity "restricted:latest"` warnings

[kvaps]

We have to refactor all our apps to avoid such warnings:

Warning: would violate PodSecurity "restricted:latest": host namespaces (hostNetwork=true), allowPrivilegeEscalation != false (containers "cozystack", "darkhttpd" must set securityContext.allowPrivilegeEscalation=false), unrestricted capabilities (containers "cozystack", "darkhttpd" must set securityContext.capabilities.drop=["ALL"]), runAsNonRoot != true (pod or containers "cozystack", "darkhttpd" must set securityContext.runAsNonRoot=true), seccompProfile (pod or containers "cozystack", "darkhttpd" must set securityContext.seccompProfile.type to "RuntimeDefault" or "Localhost")

[themoriarti]

@kvaps How to reproduce this problem or how it occurs, where to look? If there is any evidence, it will be possible to investigate.