Music health check apis

Issue-ID: PORTAL-291, PORTAL-307

Included the music changes, other changes from 2.3 branch to be
included in master, added JUnits to the new classes and updated the
document with the API version
changes.

Change-Id: I7b4c54be49317264afbdcb8d8ae3f20395bf0e1f
Signed-off-by: sa282w <sa282w@att.com>
12 files changed