Chore: Update common-packer

Update to fetch RAW base images

Issue-ID: CIMAN-33
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
Change-Id: I70199f9014307b79905564a563e609acfc9cd4fb

diff --git a/packer/common-packer b/packer/common-packer
index 3dcae18..cb6e121 160000 (submodule)
--- a/packer/common-packer
+++ b/packer/common-packer
@@ -1 +1 @@
-Subproject commit 3dcae183d810816f31950afbe1fa08fa948e61fe
+Subproject commit cb6e121196cfd33a9a4348368f34d2c37e152bfd