Initialize newly added glance-image-import config file

This patch creates a new config file glance-image-import.conf
at /etc/glance path. Also, each config option is initialized
with default values.

Need these changes to implement specs [1]:

[1]: https://blueprints.launchpad.net/glance/+spec/inject-automatic-metadata

Related-Change-Id: If14c7dc4f38360006f9cb350fbba54fa2f33be61
Change-Id: I665507db1838a50e344d3be909d7490f1f52040c
1 file changed