Upgrade common-packer to v0.3.1

Change-Id: Ie4dc270066b786f7b6199edb53ad0de0647adca8
Signed-off-by: Vanessa Rene Valderrama <vvalderrama@linuxfoundation.org>

diff --git a/global-jjb b/global-jjb
index a70124e..93a86e0 160000 (submodule)
--- a/global-jjb
+++ b/global-jjb
@@ -1 +1 @@
-Subproject commit a70124ef46b23063d25ec178e627ac226b8cef8f
+Subproject commit 93a86e0271fa5fd4d1280007289e842edc558653

diff --git a/packer/common-packer b/packer/common-packer
index 8cad102..837c821 160000 (submodule)
--- a/packer/common-packer
+++ b/packer/common-packer
@@ -1 +1 @@
-Subproject commit 8cad102383fdf28db36d05298771e1b16e70cbf4
+Subproject commit 837c821df6fa77bd81a73ecbee94bdd8e24b3172