submodule update global-jjb per LF releng, to fix issue with lftools-install.sh script

Change-Id: Iec9865ff15912df004ae8dbec9964b7b0319c036
diff --git a/jjb/global-jjb b/jjb/global-jjb
index 779110b..ad0ee7c 160000
--- a/jjb/global-jjb
+++ b/jjb/global-jjb
@@ -1 +1 @@
-Subproject commit 779110b5cd63f3eabb63598a1be79d9b9ba85464
+Subproject commit ad0ee7c792b24345f2b419b3418bd84eac0f6ac1