Update git submodules

* Update docs/submodules/music.git from branch 'master'
  to a00014e78f18134f998fb46a7dd543e6ea05a3bd
  - Merge "Read lock promotion"
  - Read lock promotion
    
    Change-Id: Ib2515c728503fb729e6ecc2e09973bbfa9e2e317
    Issue-ID: MUSIC-508
    Signed-off-by: Tschaen, Brendan <ctschaen@att.com>
    
diff --git a/docs/submodules/music.git b/docs/submodules/music.git
index e0f8f69..a00014e 160000
--- a/docs/submodules/music.git
+++ b/docs/submodules/music.git
@@ -1 +1 @@
-Subproject commit e0f8f6942b98c5bc459b7099cda349153e947e61
+Subproject commit a00014e78f18134f998fb46a7dd543e6ea05a3bd