Squash of:
* Add script to update sha1sums of kanged blobs
* Handle moved blobs in update-sha1sums.py script
* Add unpinning support to update-sha1sums.py script
* Format update-sha1sums.py with yapf
* Better handle line breaks
* Handle line with opts
Signed-off-by: LuK1337 <priv.luk@gmail.com>
Change-Id: Ia5c2a7fcdd6e8472f43b2b2d2f4aa2a0de81b188
