Updated git submodules

Project: sdnc/northbound master 4728eada855f9162030f5b46a2513e3dbffa757c

Sonar coverage vnfapi -VNFSDNSvcLogicServiceClient

Add Junit test case for VNFSDNSvcLogicServiceClient
In VNFSDNSvcLogicServiceClient:
  - Fix sonarlint issues (remove un-used import and etc)
  - Changed tab to 4 spaces as per ONAP Java code style

Issue-Id: SDNC-123
Change-Id: Id176e915f17ef5fabc6805415f92d60b4c8e95b2
Signed-off-by: beili.zhou <beili.zhou@amdocs.com>

diff --git a/docs/submodules/sdnc/northbound.git b/docs/submodules/sdnc/northbound.git
index 08df21f..4728ead 160000 (submodule)
--- a/docs/submodules/sdnc/northbound.git
+++ b/docs/submodules/sdnc/northbound.git
@@ -1 +1 @@
-Subproject commit 08df21f64505ffe31115994799db77a22251bf28
+Subproject commit 4728eada855f9162030f5b46a2513e3dbffa757c