removed iaas-specific info from baseagent
updating GCE to use v1beta16, since v1beta15 is now deprecated
Merge pull request #348 from shatterednirvana/gce-v1beta16

Updating GCE to use v1beta16, since v1beta15 is now deprecated
Merge remote-tracking branch 'org/master' into static-ip
Merge pull request #347 from shatterednirvana/static-ip

Enable users to specify an Elastic IP for their head node in AWS
Merge remote-tracking branch 'org/master' into static-ip-in-gce