Couple GCE fixes; reorg some gke and add detect-minions (w/o IP addrs; not needed).
Update gke kube-up to save uname/psswd for kubectl. Couple more tweaks and hacks. Curspot: version mismatch b/w server and client, going to build client (kubectl) from head to avoid possible failures due to 0.5/0.6 incompatabilities.
+ needed call for last commit