PEP8 and HACKING

Change-Id: Iea790ba26f14a644a97469ad71bc359b1f135904
Improve searching for shares and their snapshots

Change-Id: I31e9d1b3b7ff322db6263f6c189f16842b5e06ce
Fix typo

Change-Id: Ie3b1b5c284dc5196ef53687b5f21843c8c634cbb
Shares: put context to driver.create_snapshot.

Change-Id: I89ca69d87119f24514d856372677fad78449f7d5
Fix typo

Change-Id: I888b4880a1a8dc436850c70e56a994bd2b47da9f
Include share_id at detail of share snapshot

Change-Id: Id52d478ffb6e333618dbe898cc698e67eb405d33