Bump system reclass to 7a6911

Allow to create public network from reclass during deployment

Related-Prod: OSCORE-270

Change-Id: I17451b929e0b87dd4b26149bcdc8d69e3228b9e4
diff --git a/classes/system b/classes/system
index be1bc7b..7a69111 160000
--- a/classes/system
+++ b/classes/system
@@ -1 +1 @@
-Subproject commit be1bc7be3d43107a8d0fd747fb432bce34f16d30
+Subproject commit 7a69111e9d7665bbe030b9528b7851bf1dd17af3