Updates to support OpenStack Icehouse.

* Updated Puppetfile dependencies to support Icehouse on PE.
* Now pre-download modules to account for vagrant/fusion filesystem
inconsistencies.
* Added a script to side-load python 27 for CentOS 6.5 systems to allow
for Tempest testing.
* Added support for fwaas, lbaas, and metering.
* Updated shared networking and router config.
* Added interaction support for neutron/nova.