For clusters where the control plane nodes aren't running a CNI, the
kube-cert-agent pods deployed by concierge cannot be scheduled as they
don't know to use `hostNetwork: true`. This change allows embedding the
host network setting in the Concierge configuration. (by copying it from
the kube-controller-manager pod spec when generating the kube-cert-agent
Deployment)
Also fixed a stray double comma in one of the nearby tests.
68547f767d