Fix tests when having multiple floating pools

Compute API and scenario test fail even though
'floating_network_name' is specified. This patch provides
floating_network_name from tempest.conf as pool, when
create_floating_ip is used.

Change-Id: I2fc7fe59e5e90fb2739dc7eaa3432e7acb967013
Closes-Bug: #1475143
Co-Authored-By: Tom Patzig <tom.patzig@sap.com>
diff --git a/tempest/api/compute/floating_ips/test_floating_ips_actions.py b/tempest/api/compute/floating_ips/test_floating_ips_actions.py
index 85fd4ab..3d7f4f8 100644
--- a/tempest/api/compute/floating_ips/test_floating_ips_actions.py
+++ b/tempest/api/compute/floating_ips/test_floating_ips_actions.py
@@ -16,9 +16,12 @@
 from tempest.api.compute.floating_ips import base
 from tempest.common.utils import data_utils
 from tempest.common import waiters
+from tempest import config
 from tempest.lib import exceptions as lib_exc
 from tempest import test
 
+CONF = config.CONF
+
 
 class FloatingIPsTestJSON(base.BaseFloatingIPsTest):
     server_id = None
@@ -38,7 +41,8 @@
         server = cls.create_test_server(wait_until='ACTIVE')
         cls.server_id = server['id']
         # Floating IP creation
-        body = cls.client.create_floating_ip()['floating_ip']
+        body = cls.client.create_floating_ip(
+            pool=CONF.network.floating_network_name)['floating_ip']
         cls.floating_ip_id = body['id']
         cls.floating_ip = body['ip']
 
@@ -62,7 +66,8 @@
     def test_allocate_floating_ip(self):
         # Positive test:Allocation of a new floating IP to a project
         # should be successful
-        body = self.client.create_floating_ip()['floating_ip']
+        body = self.client.create_floating_ip(
+            pool=CONF.network.floating_network_name)['floating_ip']
         floating_ip_id_allocated = body['id']
         self.addCleanup(self.client.delete_floating_ip,
                         floating_ip_id_allocated)
@@ -78,7 +83,8 @@
         # Positive test:Deletion of valid floating IP from project
         # should be successful
         # Creating the floating IP that is to be deleted in this method
-        floating_ip_body = self.client.create_floating_ip()['floating_ip']
+        floating_ip_body = self.client.create_floating_ip(
+            pool=CONF.network.floating_network_name)['floating_ip']
         self.addCleanup(self._try_delete_floating_ip, floating_ip_body['id'])
         # Deleting the floating IP from the project
         self.client.delete_floating_ip(floating_ip_body['id'])
diff --git a/tempest/api/compute/floating_ips/test_list_floating_ips.py b/tempest/api/compute/floating_ips/test_list_floating_ips.py
index d003967..5738293 100644
--- a/tempest/api/compute/floating_ips/test_list_floating_ips.py
+++ b/tempest/api/compute/floating_ips/test_list_floating_ips.py
@@ -14,8 +14,11 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest import config
 from tempest import test
 
+CONF = config.CONF
+
 
 class FloatingIPDetailsTestJSON(base.BaseV2ComputeTest):
 
@@ -31,7 +34,8 @@
         cls.floating_ip = []
         cls.floating_ip_id = []
         for i in range(3):
-            body = cls.client.create_floating_ip()['floating_ip']
+            body = cls.client.create_floating_ip(
+                pool=CONF.network.floating_network_name)['floating_ip']
             cls.floating_ip.append(body)
             cls.floating_ip_id.append(body['id'])
 
@@ -57,7 +61,8 @@
     def test_get_floating_ip_details(self):
         # Positive test:Should be able to GET the details of floatingIP
         # Creating a floating IP for which details are to be checked
-        body = self.client.create_floating_ip()['floating_ip']
+        body = self.client.create_floating_ip(
+            pool=CONF.network.floating_network_name)['floating_ip']
         floating_ip_id = body['id']
         self.addCleanup(self.client.delete_floating_ip,
                         floating_ip_id)
diff --git a/tempest/api/compute/servers/test_server_rescue.py b/tempest/api/compute/servers/test_server_rescue.py
index 12b824f..32faf7d 100644
--- a/tempest/api/compute/servers/test_server_rescue.py
+++ b/tempest/api/compute/servers/test_server_rescue.py
@@ -41,7 +41,8 @@
         super(ServerRescueTestJSON, cls).resource_setup()
 
         # Floating IP creation
-        body = cls.floating_ips_client.create_floating_ip()['floating_ip']
+        body = cls.floating_ips_client.create_floating_ip(
+            pool=CONF.network.floating_network_name)['floating_ip']
         cls.floating_ip_id = str(body['id']).strip()
         cls.floating_ip = str(body['ip']).strip()
 
diff --git a/tempest/common/validation_resources.py b/tempest/common/validation_resources.py
index 84d0143..c3c9a41 100644
--- a/tempest/common/validation_resources.py
+++ b/tempest/common/validation_resources.py
@@ -59,7 +59,9 @@
                 create_ssh_security_group(os, add_rule)
         if validation_resources['floating_ip']:
             floating_client = os.compute_floating_ips_client
-            validation_data.update(floating_client.create_floating_ip())
+            validation_data.update(
+                floating_client.create_floating_ip(
+                    pool=CONF.network.floating_network_name))
     return validation_data
 
 
diff --git a/tempest/scenario/manager.py b/tempest/scenario/manager.py
index 8ba5f9a..c9ac0a4 100644
--- a/tempest/scenario/manager.py
+++ b/tempest/scenario/manager.py
@@ -600,6 +600,8 @@
     def create_floating_ip(self, thing, pool_name=None):
         """Create a floating IP and associates to a server on Nova"""
 
+        if not pool_name:
+            pool_name = CONF.network.floating_network_name
         floating_ip = (self.compute_floating_ips_client.
                        create_floating_ip(pool=pool_name)['floating_ip'])
         self.addCleanup(self.delete_wrapper,