Explicity specify network for heat slow tests

The heat slow test NeutronResourcesTestJSON is causing problems
for the other heat tests when run concurrenty.

Because NeutronResourcesTestJSON creates a network and the other tests
do not specify any, an amibiguity is created. This means that nova
server creation fails due to not knowing which network to attach to.

This change explicity launches servers with the network specified in
config compute.fixed_network_name.

This may mean that these tests cannot be run with nova networking.
This is most likely not a problem as there are currently no plans
to gate heat-slow tests on nova networking.

Change-Id: I16d50271a36c9bc9d0c4fb0588ae75ba100b145f
diff --git a/tempest/api/orchestration/base.py b/tempest/api/orchestration/base.py
index 2a72c95..7c72991 100644
--- a/tempest/api/orchestration/base.py
+++ b/tempest/api/orchestration/base.py
@@ -31,6 +31,7 @@
         super(BaseOrchestrationTest, cls).setUpClass()
         os = clients.OrchestrationManager()
         cls.orchestration_cfg = os.config.orchestration
+        cls.compute_cfg = os.config.compute
         if not os.config.service_available.heat:
             raise cls.skipException("Heat support is required")
         cls.build_timeout = cls.orchestration_cfg.build_timeout
@@ -40,10 +41,18 @@
         cls.orchestration_client = os.orchestration_client
         cls.servers_client = os.servers_client
         cls.keypairs_client = os.keypairs_client
+        cls.network_client = os.network_client
         cls.stacks = []
         cls.keypairs = []
 
     @classmethod
+    def _get_default_network(cls):
+        resp, networks = cls.network_client.list_networks()
+        for net in networks['networks']:
+            if net['name'] == cls.compute_cfg.fixed_network_name:
+                return net
+
+    @classmethod
     def _get_identity_admin_client(cls):
         """
         Returns an instance of the Identity Admin API client
diff --git a/tempest/api/orchestration/stacks/test_non_empty_stack.py b/tempest/api/orchestration/stacks/test_non_empty_stack.py
index defb910..0ecc5ff 100644
--- a/tempest/api/orchestration/stacks/test_non_empty_stack.py
+++ b/tempest/api/orchestration/stacks/test_non_empty_stack.py
@@ -36,6 +36,8 @@
     Type: String
   ImageId:
     Type: String
+  Subnet:
+    Type: String
 Resources:
   SmokeServer:
     Type: AWS::EC2::Instance
@@ -45,6 +47,7 @@
       ImageId: {Ref: ImageId}
       InstanceType: {Ref: InstanceType}
       KeyName: {Ref: KeyName}
+      SubnetId: {Ref: Subnet}
       UserData:
         Fn::Base64:
           Fn::Join:
@@ -78,13 +81,15 @@
                         cls._create_keypair()['name'])
 
         # create the stack
+        subnet = cls._get_default_network()['subnets'][0]
         cls.stack_identifier = cls.create_stack(
             cls.stack_name,
             cls.template,
             parameters={
                 'KeyName': keypair_name,
                 'InstanceType': cls.orchestration_cfg.instance_type,
-                'ImageId': cls.orchestration_cfg.image_ref
+                'ImageId': cls.orchestration_cfg.image_ref,
+                'Subnet': subnet
             })
         cls.stack_id = cls.stack_identifier.split('/')[1]
         cls.resource_name = 'SmokeServer'
diff --git a/tempest/api/orchestration/stacks/test_server_cfn_init.py b/tempest/api/orchestration/stacks/test_server_cfn_init.py
index 41849d0..d8334fa 100644
--- a/tempest/api/orchestration/stacks/test_server_cfn_init.py
+++ b/tempest/api/orchestration/stacks/test_server_cfn_init.py
@@ -43,6 +43,8 @@
     Type: String
   image:
     Type: String
+  network:
+    Type: String
 Resources:
   CfnUser:
     Type: AWS::IAM::User
@@ -88,6 +90,8 @@
       key_name: {Ref: key_name}
       security_groups:
       - {Ref: SmokeSecurityGroup}
+      networks:
+      - uuid: {Ref: network}
       user_data:
         Fn::Base64:
           Fn::Join:
@@ -142,7 +146,8 @@
             parameters={
                 'key_name': keypair_name,
                 'flavor': cls.orchestration_cfg.instance_type,
-                'image': cls.orchestration_cfg.image_ref
+                'image': cls.orchestration_cfg.image_ref,
+                'network': cls._get_default_network()['id']
             })
 
     @attr(type='slow')
diff --git a/tempest/scenario/manager.py b/tempest/scenario/manager.py
index c01de83..c4b98d5 100644
--- a/tempest/scenario/manager.py
+++ b/tempest/scenario/manager.py
@@ -656,3 +656,10 @@
     @classmethod
     def _stack_rand_name(cls):
         return rand_name(cls.__name__ + '-')
+
+    @classmethod
+    def _get_default_network(cls):
+        networks = cls.network_client.list_networks()
+        for net in networks['networks']:
+            if net['name'] == cls.config.compute.fixed_network_name:
+                return net
diff --git a/tempest/scenario/orchestration/test_autoscaling.py b/tempest/scenario/orchestration/test_autoscaling.py
index 1a4d802..658e9bb 100644
--- a/tempest/scenario/orchestration/test_autoscaling.py
+++ b/tempest/scenario/orchestration/test_autoscaling.py
@@ -37,11 +37,13 @@
             self.keypair_name = self.keypair.id
 
     def launch_stack(self):
+        net = self._get_default_network()
         self.parameters = {
             'KeyName': self.keypair_name,
             'InstanceType': self.config.orchestration.instance_type,
             'ImageId': self.config.orchestration.image_ref,
-            'StackStart': str(time.time())
+            'StackStart': str(time.time()),
+            'Subnet': net['subnets'][0]
         }
 
         # create the stack
diff --git a/tempest/scenario/orchestration/test_autoscaling.yaml b/tempest/scenario/orchestration/test_autoscaling.yaml
index 045b3bc..745eb05 100644
--- a/tempest/scenario/orchestration/test_autoscaling.yaml
+++ b/tempest/scenario/orchestration/test_autoscaling.yaml
@@ -8,6 +8,8 @@
     Type: String
   ImageId:
     Type: String
+  Subnet:
+    Type: String
   StackStart:
     Description: Epoch seconds when the stack was launched
     Type: Number
@@ -39,6 +41,7 @@
       LaunchConfigurationName: {Ref: LaunchConfig}
       MinSize: '1'
       MaxSize: '3'
+      VPCZoneIdentifier: [{Ref: Subnet}]
   SmokeServerScaleUpPolicy:
     Type: AWS::AutoScaling::ScalingPolicy
     Properties: