cluster/kube/lib/cockroach: move client to deployment

This prevents a bug where kubecfg fails to update the client pod when
running a cluster/kube/cluster.jsonnet update. The pod update is
attempted because of runtime/intent differences at serviceAccounts
specification, which causes kubecfg to see a diff, which causes it to
attempt and update, which causes kube-apiserver to reject the change
(because pods are immutable), which causes kubecfg to fail.

Change-Id: I20b0ecbb264213a2eb483d475c7683b4965c82be
1 file changed