Adds cloudbase-init to StackForge

cloudbase-init is a cross-platform instance initialization tool, currently lergely adopted on Windows.
FreeBSD and Linux support is currently under development as well.

cloudbase-init supports Nova, EC2 and ConfigDrive metadata, Heat templates and any OpenStack related content.

Supports Python 2.7 and Python 3.3.

Change-Id: I80285664bd6210136997b85f36faa44df9fa9af8
Merge "Adds cloudbase-init to StackForge"