Update common-packer to v0.4.0

Signed-off-by: Anil Belur <abelur@linuxfoundation.org>
Change-Id: Icbf78b30b2124fc575f5cd060a6543a4a4d0ca26

diff --git a/packer/common-packer b/packer/common-packer
index c320011f14715c5757160e895b57967b90600254..1d5bbea3f4a9c037228a923e47dd76f70aeae2a9 160000 (submodule)
--- a/packer/common-packer
+++ b/packer/common-packer
@@ -1 +1 @@
-Subproject commit c320011f14715c5757160e895b57967b90600254
+Subproject commit 1d5bbea3f4a9c037228a923e47dd76f70aeae2a9