Don't expect NST to be specified in a cluster

Nailgun apparently does not include information about network
segmentation type to JSON representations of environments for
GET and POST requests.

This patch removes all references to that information.

Closes-bug: #1514897
Change-Id: I0d7970ad4c45c4e6175a7366610df1ec2a850254

fuelclient/commands/environment.py

@@ -28,8 +28,7 @@ class EnvList(EnvMixIn, base.BaseListCommand):
     columns = ("id",
                "status",
                "name",
-               "release_id",
-               "net_segment_type")
+               "release_id")
 
 
 class EnvShow(EnvMixIn, base.BaseShowCommand):
@@ -41,8 +40,7 @@ class EnvShow(EnvMixIn, base.BaseShowCommand):
                "release_id",
                "pending_release_id",
                "is_customized",
-               "changes",
-               "net_segment_type")
+               "changes")
 
 
 class EnvCreate(EnvMixIn, base.BaseShowCommand):

fuelclient/tests/unit/v2/cli/test_engine.py

@@ -94,25 +94,22 @@ class BaseCLITest(oslo_base.BaseTestCase):
 
     @mock.patch('cliff.formatters.table.TableFormatter.emit_list')
     def test_lister_sorting(self, m_emit_list):
-        cmd = 'env list -s status net_segment_type'
+        cmd = 'env list -s status release_id'
 
         raw_data = [{'id': 43,
                      'status': 'STATUS 2',
                      'name': 'Test env 2',
-                     'release_id': 2,
-                     'net_segment_type': 'tun'},
+                     'release_id': 2},
 
                     {'id': 42,
                      'status': 'STATUS 1',
                      'name': 'Test env 1',
-                     'release_id': 2,
-                     'net_segment_type': 'tun'},
+                     'release_id': 2},
 
                     {'id': 44,
                      'status': 'STATUS 2',
                      'name': 'Test env 3',
-                     'release_id': 2,
-                     'net_segment_type': 'gre'}]
+                     'release_id': 1}]
 
         expected_order = [1, 2, 0]
         expected_data = [[raw_data[i][prop] for prop in env.EnvList.columns]

fuelclient/tests/unit/v2/lib/test_environment.py

@@ -68,7 +68,7 @@ class TestEnvFacade(test_api.BaseLibTest):
     def test_env_create(self, m_init):
         env_name = self.fake_env['name']
         release_id = self.fake_env['release_id']
-        nst = self.fake_env['net_segment_type']
+        nst = 'vlan'
 
         matcher = self.m_request.post(self.res_uri, json=self.fake_env)
 

fuelclient/tests/utils/fake_env.py

@@ -27,7 +27,6 @@ def get_fake_env(name=None, status=None, release_id=None,
             'is_customized': False,
             'release_id': release_id or 2,
             'name': name or 'fake_env',
-            'net_segment_type': 'vlan',
             'fuel_version': fuel_version or '8.0',
             'pending_release_id': pending_release,
             'id': env_id or 1,