Various pseudowire fixes and improvements.

- Co-ordination when creating - removing pseudowires from
  different instances with a use of a DistributedLock.
- Fixed REST API To return json with specific error for
  the single pw instantiation.
- Fixed REST API to return specific error also for pseudowires
  that could not be decoded.
- Minor bug fix to return appropriate error when instantiating
  a pw from the command line that could not be decoded.
- Fixed bug when creating spine-leaf-leaf pseudowire where we observed flows in pending state.
- Improved logging.

Change-Id: I60dd0ebf8af63ca74d18cfe4801d01846641fb7b
6 files changed
tree: ab68cacfc740abd7832f911f80335fbf550cfe21
  1. BUCK
  2. app/
  3. pom.xml
  4. web/