Updated git submodules

Project: music master 21b8e51a9318a97363437c9668e3564875c15f8f

Merge "Use managed guava version"

Use managed guava version

Use centrally managed guava version specified in
oparent.  Includes upgrade to oparent 1.2.0.

This change was submitted by script and may include
additional whitespace or formatting changes.

Change-Id: I32d49c89aa250e155a66d1302c16893f27803997
Issue-ID: INT-619
Signed-off-by: Gary Wu <gary.i.wu@huawei.com>

diff --git a/docs/submodules/music.git b/docs/submodules/music.git
index 96f707f..21b8e51 160000 (submodule)
--- a/docs/submodules/music.git
+++ b/docs/submodules/music.git
@@ -1 +1 @@
-Subproject commit 96f707fc3cf51e5bd1d1cde81ced3a804af2d5d9
+Subproject commit 21b8e51a9318a97363437c9668e3564875c15f8f