Add interprocess locks to net interfaces handlers

Manila uses one service network for all backends, in this case
handling of all shared net resources should be covered with locks
in network modules.

Changes:
- added decorator 'device_name_synchronized' to remove concurrency
  issues.
- changed arg positions in related methods to satisfy requirement of
  decorator.
- with change of arg position was removed arg 'network_id' in
  metaclass 'LinuxInterfaceDriver' as redundant.

Change-Id: I7468f0a85bbc2752cfd82ae85d7491636ddea24b
Closes-Bug: #1346796
Merge "Add interprocess locks to net interfaces handlers"