Update git submodules

* Update docs/submodules/dmaap/buscontroller.git from branch 'master'
  to 7a3fdbe253f2f4c7cf407d27fbd0bc990fdca817
  - Unify versions of artifacts from this repo

    patch set 2: put parent/version.properties in each docker image

    Change-Id: I41daa74dc9fcd36a5807522338f4c732fbb0d40e
    Signed-off-by: dglFromAtt <dgl@research.att.com>
    Issue-ID: DMAAP-1194
    Signed-off-by: dglFromAtt <dgl@research.att.com>

diff --git a/docs/submodules/dmaap/buscontroller.git b/docs/submodules/dmaap/buscontroller.git
index 840e077..7a3fdbe 160000 (submodule)
--- a/docs/submodules/dmaap/buscontroller.git
+++ b/docs/submodules/dmaap/buscontroller.git
@@ -1 +1 @@
-Subproject commit 840e077756535ca6591ce893fc21e63e4b8a915e
+Subproject commit 7a3fdbe253f2f4c7cf407d27fbd0bc990fdca817