Updated git submodules

Project: aai/esr-server master 572c36a74c648dd4ccbe44cd8c1184e18dbea751

Define attributes about PNF

Issue-ID: AAI-1495

Change-Id: I8a6cc5320447866a4cb232623aaf9cfd432803bf
Signed-off-by: Zi Li <li.zi30@zte.com.cn>


diff --git a/docs/submodules/aai/esr-server.git b/docs/submodules/aai/esr-server.git
index 16e9635..572c36a 160000
--- a/docs/submodules/aai/esr-server.git
+++ b/docs/submodules/aai/esr-server.git
@@ -1 +1 @@
-Subproject commit 16e963509621830d8828054750f9512b535b1948
+Subproject commit 572c36a74c648dd4ccbe44cd8c1184e18dbea751