[Libvirt-cim] [PATCH 0 of 5] #2 - Update single instance interface on HostSystem and Adopt HostSystem interface to assocs

This patch set update the HostSystem provider to follow the common look and feel of single instance providers. The interface changes on HostSystem have been adopted to the associations HD, HRP, EC and HS. diff to patch set 1: fixed HD - missing braces (thanks to eagle eye kaitlin