Don't use docker-machine for tests

README.rst

@@ -84,6 +84,7 @@ We use specific docker images to run user algorithms. Download the following
 base images before you try to run tests or experiments on your computer::
 
   $ docker pull beats/py27:system
+  $ docker pull debian:8.4
 
 Optionally, also download the following images to be able to re-run experiments
 downloaded from the BEAT platform (not required for unit testing)::

beat/core/agent.py

@@ -50,7 +50,7 @@ def get_network_ip_address(host_address):
   import socket
   import difflib
   possible_addresses = socket.gethostbyname_ex(socket.gethostname())[2]
-  return difflib.get_close_matches(host_address, possible_addresses)[0]
+  return difflib.get_close_matches(host_address, possible_addresses, cutoff=0)[0]
 
 
 class Server(gevent.Greenlet):

beat/core/test/test_docker.py

@@ -55,7 +55,7 @@ class AsyncTest(unittest.TestCase):
 
   @classmethod
   def setUpClass(cls):
-    cls.host = Host(use_machine='default')
+    cls.host = Host()
     cls.host.setup()
 
 

beat/core/test/test_execution.py

@@ -59,7 +59,7 @@ class TestExecution(unittest.TestCase):
 
   @classmethod
   def setUpClass(cls):
-    cls.host = Host(use_machine='default')
+    cls.host = Host()
     cls.host.setup()