Sync mcp-virtual-aio model from mcp-virtual-lab repo

This patch syncs mcp-virtual-aio and scripts from mcp-virtual-lab repo

Change-Id: Icf0a9eb44bc0d06e9fffe22bf3eb03b0f29d75c5
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..014c0c1
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "classes/system"]
+	path = classes/system
+	url = https://gerrit.mcp.mirantis.net/salt-models/reclass-system