Python3 support to gobgp tests

This PR removes dependencies on old Fabric version, as it's not
supported by Python3.

The current Fabric versions don't support the colors and indent
used previously, so we found substitute methods from other
libraries and defined these in the library files.

The local function from fabric is now just a wrapper to invoke's
run function. All the files were processed through 2to3 command.

All the tests were executed and we don't see any difference on
the outputs when running Python2 or Python3.

The creation of gobgp container is removed from base.py into
fabfile.py, in order to comply with Fabric2 changes and simplify
dependencies.

1 files changed, 5 insertions, 6 deletions

diff --git a/test/scenario_test/route_server_test2.py b/test/scenario_test/route_server_test2.py
index 08b984ae..e070bc0b 100644
--- a/test/scenario_test/route_server_test2.py
+++ b/test/scenario_test/route_server_test2.py
@@ -13,19 +13,18 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from __future__ import absolute_import
+
 
 import sys
 import time
 import unittest
 
-from fabric.api import local
 import nose
 
 from lib.noseplugin import OptionParser, parser_option
 
 from lib import base
-from lib.base import BGP_FSM_ESTABLISHED
+from lib.base import BGP_FSM_ESTABLISHED, local
 from lib.gobgp import GoBGPContainer
 from lib.exabgp import ExaBGPContainer
 
@@ -53,7 +52,7 @@ class GoBGPTestBase(unittest.TestCase):
         initial_wait_time = max(ctn.run() for ctn in ctns)
         time.sleep(initial_wait_time)
 
-        for cli in cls.clients.values():
+        for cli in list(cls.clients.values()):
             # Omit "passwd" to avoid a issue on ExaBGP version 4.0.5:
             # https://github.com/Exa-Networks/exabgp/issues/766
             g1.add_peer(cli, is_rs_client=True, passive=True, prefix_limit=10)
@@ -67,7 +66,7 @@ class GoBGPTestBase(unittest.TestCase):
 
     # test each neighbor state is turned establish
     def test_01_neighbor_established(self):
-        for cli in self.clients.values():
+        for cli in list(self.clients.values()):
             self.gobgp.wait_for(expected_state=BGP_FSM_ESTABLISHED, peer=cli)
 
     def test_02_add_neighbor(self):
@@ -103,7 +102,7 @@ class GoBGPTestBase(unittest.TestCase):
 if __name__ == '__main__':
     output = local("which docker 2>&1 > /dev/null ; echo $?", capture=True)
     if int(output) is not 0:
-        print "docker not found"
+        print("docker not found")
         sys.exit(1)
 
     nose.main(argv=sys.argv, addplugins=[OptionParser()],