* Provide entry point for Heat Metadata to drive os-refresh-config
* Use os-config-applier for configuring heat cfn tools
Change-Id: Ie38b932173948f1e7c414c48caa1b037916bef84
os-refresh-config simply runs things in a predictable order in directories
that other elements can populate. This element installs it and sets it
up to run at boot.
We also modify os-config-applier element to be called by this rather
than to have its own upstart job. This provides an example of how other
elements can insert themselves into the refresh process.
Change-Id: I52d72b7fd302ec317840af87fa77299387af99ad
