Update git submodules

* Update docs/submodules/music.git from branch 'master'
  to a627a5b2d6cd2823c079fcc842a188f3faf2bf5d
  - Merge "MusicLockingExceptionTest - Junit test cases"
  - MusicLockingExceptionTest - Junit test cases
    
    Junit Added for MusicLockingException
    
    Issue-ID: MUSIC-285
    Change-Id: I141c63712c5706e818018ac1b80a0ac97057e420
    Signed-off-by: Sudarshan Kumar <sudars19@in.ibm.com>
    
diff --git a/docs/submodules/music.git b/docs/submodules/music.git
index 0ef2661..a627a5b 160000
--- a/docs/submodules/music.git
+++ b/docs/submodules/music.git
@@ -1 +1 @@
-Subproject commit 0ef26619ea167f455e907db7998792b5114fb1dd
+Subproject commit a627a5b2d6cd2823c079fcc842a188f3faf2bf5d