Update global-jjb to v0.38.3

Updating global-jjb to fetch "Automate
Artifact release". Commit:
d473edacae5c8da2b4da50e6d41b2a1c52316813

We do not want to update to the latest
tag yet since there are few features that
we are not ready to pick up before Dublin
is finalized.

Change-Id: I903bedfb6f27728d4e149665da0e3de71e52da65
Issue-ID: CIMAN-33
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>

diff --git a/global-jjb b/global-jjb
index 59af00a..12853a4 160000 (submodule)
--- a/global-jjb
+++ b/global-jjb
@@ -1 +1 @@
-Subproject commit 59af00afa9923c744db50cd105f9bb27b7356aaa
+Subproject commit 12853a424496b5d87c355f32fa27604099a0edbb