Update git submodules

* Update docs/submodules/music.git from branch 'master'
  to c91215965fa4d6f19441fa96fd5c3b5910795057
  - Merge "Added test case to improve code coverage"
  - Added test case to improve code coverage
    
    Added test case to improve code coverage
    
    Issue-ID: MUSIC-324
    Change-Id: I0bec3c6a1d890cd920fe9a21de7e75590114f48d
    Signed-off-by: Jegadeesh Babu <jegabab1@in.ibm.com>
    
1 file changed