Update global-jjb to the latest v0.51.1

Change-Id: Ie00673964ec51564f01f98fb7d202f8c02af1109
Signed-off-by: Anil Belur <abelur@linuxfoundation.org>

diff --git a/global-jjb b/global-jjb
index 0bc70d1762dc88b90d4f9aa99a2f3bbf2b55b078..a47a2c5d2839a34e22c67e9e1e6578efd5540ae2 160000 (submodule)
--- a/global-jjb
+++ b/global-jjb
@@ -1 +1 @@
-Subproject commit 0bc70d1762dc88b90d4f9aa99a2f3bbf2b55b078
+Subproject commit a47a2c5d2839a34e22c67e9e1e6578efd5540ae2