core: Adding HotPlug to FeatureSupported

This patch adds the Hot Plug feature to the
FeatureSupported class.

Change-Id: I1efa16a90e2177d196ba9b8cd08d407865cfbfbb
Bug-Url: https://bugzilla.redhat.com/873338
Signed-off-by: Muli Salem <msalem@redhat.com>