Updated git submodules

Project: dmaap/datarouter master a640609ea3ba7cf2adc2f593d9ead3b5e229649b

Merge changes from topics 'amareshKumar_DMAAP715_Sonar_5Sep', 'amareshKumar_DMAAP714_Sonar_5Sep'

* changes:
  fixed 12 blocker issues in group.java
  Fixed 22 Blocker sisue in Feed.java

fixed 12 blocker issues in group.java

https://sonar.onap.org/project/issues?fileUuids=AWHFaQiuEU5FCDfKtnFS&id=org.onap.dmaap.datarouter%3Aparent&resolved=false&severities=BLOCKER

Issue-ID: DMAAP-715
Change-Id: Ia917c7144b330249c7af1cec301ddbddbb3462e6
Signed-off-by: Amaresh Kumar <kamaresh@in.ibm.com>
Fixed 22 Blocker sisue in Feed.java

Fixed 22 sonar issues

https://sonar.onap.org/project/issues?id=org.onap.dmaap.datarouter%3Aparent&open=AWHFaQqGEU5FCDfKtndk&resolved=false&severities=BLOCKER&types=BUG

Issue-ID: DMAAP-714
Change-Id: Iaa5b9d612314871af34d0f2fd3440829a1c705b7
Signed-off-by: Amaresh Kumar <kamaresh@in.ibm.com>

diff --git a/docs/submodules/dmaap/datarouter.git b/docs/submodules/dmaap/datarouter.git
index d76ae00..a640609 160000 (submodule)
--- a/docs/submodules/dmaap/datarouter.git
+++ b/docs/submodules/dmaap/datarouter.git
@@ -1 +1 @@
-Subproject commit d76ae00310f23c8a816512929903a0f4cbc42459
+Subproject commit a640609ea3ba7cf2adc2f593d9ead3b5e229649b