Updated git submodules

Project: music/distributed-kv-store master 77ea4c747782cc753e33b9b7bee3adb5d92a232c

Fix swaggerv2doc sphinx extension

This change fixes the error caused for missing
sphinxcontrib-swaggerdoc python module. It also adds the rstcheck
python module to prevent future errors.

Change-Id: I9db569e8bd5045d2239c1dadb1ac912ce8ee3db9
Issue-ID: DOC-300
Signed-off-by: Victor Morales <victor.morales@intel.com>

diff --git a/docs/submodules/music/distributed-kv-store.git b/docs/submodules/music/distributed-kv-store.git
index 18d9d99..77ea4c7 160000 (submodule)
--- a/docs/submodules/music/distributed-kv-store.git
+++ b/docs/submodules/music/distributed-kv-store.git
@@ -1 +1 @@
-Subproject commit 18d9d994e85ef897d570081bc3a7e1da42b49c1e
+Subproject commit 77ea4c747782cc753e33b9b7bee3adb5d92a232c