Dialer pod does not conform to restricted pod security profile

[lkingland]

The in-cluster dialer pod used during deployment does not set the
security context fields required by the "restricted" pod security
profile: allowPrivilegeEscalation, capabilities drop, runAsNonRoot,
and seccompProfile.

This produces warnings on clusters enforcing pod security admission
and will fail on clusters that enforce (rather than warn) the
restricted profile.

Related: SRVOCF-445