Merge pull request #52 from markvoelker/multi-node

Fix 1155132 by providing a $time_zone variable to allow multiple TZ supp...
Allow override of all compute and control parameters from site.pp to avoid client configuration of core.pp. https://bugs.launchpad.net/openstack-cisco/grizzly/+bug/1159598
Merge pull request #53 from michaeltchapman/core_variables

Allow override of all compute and control parameters from site.pp to avo...