Adding endpoint type parameters

Creating openstack_endpoint_type and secondary_endpoint_type.

Change-Id: Ibba15ece974bd668c7d3bdb2b6e427a27fc39965
Added support for parametrized help_url path.

This should close: bz#1030398

Change-Id: I3522c446f9a3c2981db0f03b8080fdfa68ea958b
Merge "Adding endpoint type parameters"