This feature adds format info in filesystem type
drivers with the following changes:
1) Store format info in admin_metadata while creating/cloning
volumes
2) Use format info while extending volumes
3) Modify volume format when performing snapshot delete
(blockRebase) operation on attached volume.
4) Return format in connection_info
blueprint add-support-store-volume-format-info
Change-Id: I43036837274a7c8dba612db53b34a6ce2cfb2f07