Move unpack_boot_image.py to cuttlefish bin directory.

This change reduces /usr/bin pollution with scripts not directly relevant to users
by moving unpack_boot_image.py script to /usr/lib/cuttlefish-common/bin folder.

Change-Id: Ibf34ca5f34ccf923522ea60d921373900345305d
(cherry picked from commit bf99d9d159a9dbdf8fa211e7af494f589b2af797)
2 files changed