Update common-packer to the latest 0.6.2

Signed-off-by: Aric Gardner <agardner@linuxfoundation.org>
Change-Id: Ifec050e8d089eea2ebd17ad20d37962bbbd7a3e8

diff --git a/packer/common-packer b/packer/common-packer
index 9a00328a047d55f0926381c8af1e35de36b6f04e..a34a25187d428d6f5c9c6a19bb2b63b6c2688320 160000 (submodule)
--- a/packer/common-packer
+++ b/packer/common-packer
@@ -1 +1 @@
-Subproject commit 9a00328a047d55f0926381c8af1e35de36b6f04e
+Subproject commit a34a25187d428d6f5c9c6a19bb2b63b6c2688320