Pull in common-variables.sh PATH fix

javadoc-publish and maven-stage jobs are failing due to bad PATH in
the common-variables.sh script.

Change-Id: I9f887061a7633c5f8e1e85a5f9f5189d50ca48bc
Signed-off-by: Thanh Ha <thanh.ha@linuxfoundation.org>

diff --git a/jjb/global-jjb b/jjb/global-jjb
index edeb841d4bdfe240fa88b52a8d78caeffbab50f6..c61d85ac2a8d2aa6bacfa4719c5ec89e3c5de88c 160000 (submodule)
--- a/jjb/global-jjb
+++ b/jjb/global-jjb
@@ -1 +1 @@
-Subproject commit edeb841d4bdfe240fa88b52a8d78caeffbab50f6
+Subproject commit c61d85ac2a8d2aa6bacfa4719c5ec89e3c5de88c