Bug 448986 - [http] HttpServiceRuntimeImpl trackers really only need to
track ServiceReferences

Change-Id: If5360582a3d5e9515c55aea7962907181dbccc6b
Signed-off-by: Thomas Watson <tjwatson@us.ibm.com>
Bug 448772 - [http] [RFC 189] should use impl context or system context
to track whiteboard services

Change-Id: I683f64e36bb4045f65d9c2533f623db08cc0394e
Signed-off-by: Thomas Watson <tjwatson@us.ibm.com>
Bug 448772 - [http] [RFC 189] should use impl context or system context
to track whiteboard services

 - add new tests

Change-Id: I904fdcae6dd4029c33f179ed5a18683ef645ff67
Signed-off-by: Thomas Watson <tjwatson@us.ibm.com>