Update to latest common-packer

Change-Id: I99539e63342cefaa1762f473089fc8befb1411ea
Signed-off-by: Andrew Grimberg <agrimberg@linuxfoundation.org>

diff --git a/packer/common-packer b/packer/common-packer
index 576b3df..49b8bab 160000 (submodule)
--- a/packer/common-packer
+++ b/packer/common-packer
@@ -1 +1 @@
-Subproject commit 576b3dfa361255725bd23b3cbf584a957d0ff1dd
+Subproject commit 49b8babff7bc2b1bdbd7ae56e61d3eac73f23165