Disable docker restarts, for now

If the docker daemon goes down and comes up, it will try to restart
containers.  This will race with our own restart loop.  Only one loop should
be controlling restarts, probably.
Install nsinit that is vendored into docker.
Remove etcd servers flag from controller manager in local-up-cluster
Kubelet should have a max think time before auto resync

The sync frequency should be part of the syncLoop and resync no
less often than every X seconds.  The current implementation runs
even if a config update was delivered less than X seconds ago.
Merge pull request #819 from thockin/restarts

Disable docker restarts, for now
Merge pull request #820 from brendandburns/nsenter

Install nsinit that is vendored into docker.
Merge pull request #821 from csrwng/fix_local_up_cluster_controller

Remove etcd servers flag from controller manager in local-up-cluster.sh
Merge pull request #812 from smarterclayton/sync_loop_max_wait

Kubelet should have a max think time before auto resync
Remove duplicate -config param

This is duplicated in cluster/saltbase/salt/kubelet/default
cluster/saltbase/salt/kubelet/initd