Updated git submodules

Project: sdnc/oam master 4b4e9274a650ead672c14e7a30685e804883ce34

Merge "Fix Overlay DG testing issue"

Fix Overlay DG testing issue

After executing DeActivateDCINetworkInstance, DeleteNetworkInstance
node is executed as atomic block is not present, added new block,
also fixed required parameter issue where value is not passed.
https://jira.onap.org/browse/SDNC-191

Issue-Id: SDNC-191
Change-Id: Ia3009882fd7c2320a333ba04f726d57079f2d509
Signed-off-by: shashikanth.vh <shashikanth.vh@huawei.com>

diff --git a/docs/submodules/sdnc/oam.git b/docs/submodules/sdnc/oam.git
index 6331723..4b4e927 160000 (submodule)
--- a/docs/submodules/sdnc/oam.git
+++ b/docs/submodules/sdnc/oam.git
@@ -1 +1 @@
-Subproject commit 633172361e57e3b314feb9bc7cae83e6c9b6987b
+Subproject commit 4b4e9274a650ead672c14e7a30685e804883ce34