updating list of memcache nodes in python app servers at most once per minute
having the appcontroller write an updated list of nodes running memcached periodically
excluding nameservers from /etc/resolv.conf
only removing nameservers from /etc/resolv.conf if the user requests it in the tools
merged with testing
Merge remote-tracking branch 'org/testing' into no-nameservers-in-etc-resolv
fixed broken unit test
Merge pull request #620 from shatterednirvana/no-nameservers-in-etc-resolv

No nameservers in /etc/resolv.conf