Create a proxy inifile provider that will sit between the openstack
configuration providers (ie. keystone_config) and the actual ini_setting
provider.
Adding such a component will give us more flexibility on the ini_setting
provider. With that in place we could :
* Test new feature with the provider - merge them upstream when validated
* Bypass upstream limit if our queries are not valid for upstream.
By inheriting the provider we don't fork and hence should remain
compatible with the next releases of puppetlabs-inifile
Change-Id: I061371d8cf2faf928019161e635e1b4252a6b433
f754ef3bcf