[Libvirt-cim] [PATCH 0 of 9] Reorganized association provider registration

[Heidi Eckhart]

The association provider was registered for each subclass with a different
name. That caused duplicated instances as the same provider gets
called twice, but has no chance to figure out for which registration. This
patch set tries to fix it. Please review. Thanks.

Based on:
- #2 Fix (again) VSMCaps and ElementCap
- Remove devid-style InstanceID support from ELEC and EC