Fix to call run vs. quietRun for remote nodes
Fix IsOldOVS() for remote switches.
Call killpg() with correct pid and only if process hasn't exited.
Add precheck to check for server ssh and sudo without password
Allow serverIP to be specified; minor text changes.
Chroot to root fs if setns() fails for mount namespace
Make RController redundant, and allow ssh w/o control path
Import networkx and matplotlib on demand
Add experimental --cluster and --placement options
Ugh - work around waitConnected() method name conflict
ubuntu12 -> ubuntu2
merged bob's commits
allow user to choose an nfs mount
nfs authentication idea