Missing Debian dependency

[cnorthwood]

Currently debugging the node facade not starting on a new machine, the error I get is:

Traceback (most recent call last):
  File "/usr/bin/nmosnode", line 6, in <module>
    from nmosnode.nodefacadeservice import NodeFacadeService
  File "/usr/lib/python2.7/dist-packages/gevent/builtins.py", line 93, in __import__
    result = _import(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/nmosnode/nodefacadeservice.py", line 29, in <module>
    from api import FacadeAPI
  File "/usr/lib/python2.7/dist-packages/gevent/builtins.py", line 93, in __import__
    result = _import(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/nmosnode/api.py", line 15, in <module>
    from nmoscommon.webapi import *
  File "/usr/lib/python2.7/dist-packages/gevent/builtins.py", line 93, in __import__
    result = _import(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/nmoscommon/webapi.py", line 21, in <module>
    from flask_sockets import Sockets
  File "/usr/lib/python2.7/dist-packages/gevent/builtins.py", line 93, in __import__
    result = _import(*args, **kwargs)
ImportError: No module named flask_sockets

I believe this repo is where flask_sockets is imported, so python-flask-sockets should be a dependency of the Debian repo.