Update to latest common-packer

Change-Id: I14876f4d6821991f56dd0eab37863f2c2dcf0678
Signed-off-by: Andrew Grimberg <agrimberg@linuxfoundation.org>

diff --git a/packer/common-packer b/packer/common-packer
index 3473765..8cad102 160000 (submodule)
--- a/packer/common-packer
+++ b/packer/common-packer
@@ -1 +1 @@
-Subproject commit 3473765a58f4a67fef013bcad81da81b02c5493d
+Subproject commit 8cad102383fdf28db36d05298771e1b16e70cbf4