Update git submodules

* Update docs/submodules/music.git from branch 'master'
  to 9277729f6cd6fdc0313b98d303fddff2ca8a63af
  - Unit test cases for DeadLockDetectionUtil, CipherUtil and CassaLockStore
    
    Issue-ID: MUSIC-521
    
    Signed-off-by: Gadicherla, Shiva <sg592n@att.com>
    Change-Id: I8544a2003548eff9d26c48f65e5109154924bfe9
    
1 file changed