* Add new interface service-ready to check for service
readiness of remote application.
* Create a placeholder charm sunbeam-libs to place all
the common libraries. The charm and the libraries need
not be published to charmhub since at this point of time
they are used internally by sunbeam.
* Add provider to service-ready in masakari-k8s
* Add requirer to service-ready in openstack-hypervisor
and enable/disable snap option masakari.enable based on
service-ready relation.
Change-Id: I99feccee2c871fc5a581fdea6f45a541efc2a968
0bdc19c4ea