Change default fixed and internal networks to custom in tests

- Add method to update fixed and internal network
- Add update of fixed and internal networks to all tests

Change-Id: I22dd874f95a9ad66a2f99f5cb182cbcbeba5d953
Closes-Bug: #1358726

fuelweb_test/models/fuel_web_client.py

@@ -1227,3 +1227,19 @@ class FuelWebClient(object):
             assert_equal(nailgun_cidr, slave_cidr.rstrip(),
                          'Cidr after deployment is not equal'
                          ' to cidr by default')
+
+    def update_internal_network(self, cluster_id, cidr, gateway=None):
+        net_provider = self.client.get_cluster(cluster_id)['net_provider']
+        net_config = self.client.get_networks(cluster_id)
+        data = (cluster_id, net_config["networking_parameters"],
+                net_config["networks"])
+        if net_provider == 'nova_network':
+            net_config["networking_parameters"]['fixed_networks_cidr']\
+                = cidr
+            self.client.update_network(*data)
+        elif net_provider == 'neutron':
+            net_config["networking_parameters"]['internal_cidr']\
+                = cidr
+            net_config["networking_parameters"]['internal_gateway']\
+                = gateway
+            self.client.update_network(*data)

fuelweb_test/tests/test_neutron.py

@@ -71,6 +71,8 @@ class NeutronGre(TestBasic):
                 'slave-03': ['compute', 'cinder']
             }
         )
+        self.fuel_web.update_internal_network(cluster_id, '192.168.196.0/26',
+                                              '192.168.196.1')
         self.fuel_web.deploy_cluster_wait(cluster_id)
 
         cluster = self.fuel_web.client.get_cluster(cluster_id)
@@ -252,6 +254,8 @@ class NeutronVlanHa(TestBasic):
                 'slave-05': ['compute']
             }
         )
+        self.fuel_web.update_internal_network(cluster_id, '192.168.196.0/22',
+                                              '192.168.196.1')
         self.fuel_web.deploy_cluster_wait(cluster_id)
 
         cluster = self.fuel_web.client.get_cluster(cluster_id)

fuelweb_test/tests/test_simple.py

@@ -106,6 +106,7 @@ class SimpleFlat(TestBasic):
                 'slave-02': ['compute']
             }
         )
+        self.fuel_web.update_internal_network(cluster_id, '10.1.0.0/24')
         self.fuel_web.deploy_cluster_wait(cluster_id)
         self.fuel_web.assert_cluster_ready(
             'slave-01', smiles_count=6, networks_count=1, timeout=300)