Update git submodules

* Update docs/submodules/dmaap/messagerouter/messageservice.git from branch 'master'
  to 9cb7de44ab074cdbc1c6655835586c7fce2c6577
  - Automation adds release-notes.rst

    Add _release_notes hook to allow automation.
    Fix non valid release notes characters in content.

    Issue-ID: CIMAN-376
    Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
    Change-Id: I11bff32a86e9ee2378e0ff3c6499a78f25135125

diff --git a/docs/submodules/dmaap/messagerouter/messageservice.git b/docs/submodules/dmaap/messagerouter/messageservice.git
index 73a1a11..9cb7de4 160000 (submodule)
--- a/docs/submodules/dmaap/messagerouter/messageservice.git
+++ b/docs/submodules/dmaap/messagerouter/messageservice.git
@@ -1 +1 @@
-Subproject commit 73a1a11a902ae6882af1d84a3f421b6d3dd4d180
+Subproject commit 9cb7de44ab074cdbc1c6655835586c7fce2c6577