gce - firewalls api
Merge pull request #1148 from dralves/gce-firewalls

gce - firewalls api
support changing credentials at runtime
accomodate runtime credential changes
openstack-nova: eliminating NPE thrown by SecurityGroupApi.delete()
Merge pull request #1181 from jclouds/dynamic-credentials

Dynamic credentials
The access list API for Rackspace Cloud Load Balancers.
Merge pull request #1182 from aplowe/master

openstack-nova: NPE in SecurityGroupApi.delete()
Merge pull request #1179 from rackspace/rax-clb-access-list

The access list API for Rackspace Cloud Load Balancers.