Update git submodules

* Update docs/submodules/vnfrqts/requirements.git from branch 'master'
  to c881fe779e0500255f6c19fc7aa1055eb1ecb961
  - Merge "Fixed PublishEventBatch diagram in VES spec"
  - Fixed PublishEventBatch diagram in VES spec

    Since we no longer have the source images, I've
    converted them to either diagrams generated
    from Sphinx plugins or simple text representations.

    Issue-ID: VNFRQTS-862
    Signed-off-by: Lovett, Trevor <trevor.lovett@att.com>
    Change-Id: Iafd346336ca8b5cec71bbeee9fad825da2a5d0bf

diff --git a/docs/submodules/vnfrqts/requirements.git b/docs/submodules/vnfrqts/requirements.git
index 096bef9..c881fe7 160000 (submodule)
--- a/docs/submodules/vnfrqts/requirements.git
+++ b/docs/submodules/vnfrqts/requirements.git
@@ -1 +1 @@
-Subproject commit 096bef947351a1f76986b09121b12a371ca010ca
+Subproject commit c881fe779e0500255f6c19fc7aa1055eb1ecb961