added code to see if a static ip exists in GCE
added code to associate static ips in GCE, and changed existing static ip checks to work correctly in GCE
Merge remote-tracking branch 'org/master' into static-ip-in-gce
Merge pull request #349 from shatterednirvana/static-ip-in-gce

Allowing users to specify static IPs for use with GCE