Trove Support

This commit adds support for Trove to Packstack.

Change-Id: I8a4c00099da3f78f44a7fd25c094a42fa54bb447
Ironic support for packstack

Ironic is currently not a supported plugin for packstack.
This patch will create the Ironic plugin.

Change-Id: Ia4a239beaf2609bd11cfc35f29527f53c0d6c9f2