Add bulk methods to network service clients

The tempest network_client still contains some bulk methods, but
they should be implemented on each resource client.
This patch addes them into each client. After this patch and a new
tempest-lib release, we can remove these bulk methods from Tempest.

Partially implements blueprint consistent-service-method-names

Change-Id: Iea34620ae8785cc593d9c68bf3c31840f3e79bd7

tempest_lib/services/network/networks_client.py

@@ -36,3 +36,12 @@ class NetworksClient(base.BaseNetworkClient):
     def list_networks(self, **filters):
         uri = '/networks'
         return self.list_resources(uri, **filters)
+
+    def create_bulk_networks(self, **kwargs):
+        """Create multiple networks in a single request.
+
+        Available params: see http://developer.openstack.org/
+                              api-ref-networking-v2.html#bulkCreateNetwork
+        """
+        uri = '/networks'
+        return self.create_resource(uri, kwargs)

tempest_lib/services/network/ports_client.py

@@ -36,3 +36,12 @@ class PortsClient(base.BaseNetworkClient):
     def list_ports(self, **filters):
         uri = '/ports'
         return self.list_resources(uri, **filters)
+
+    def create_bulk_ports(self, **kwargs):
+        """Create multiple ports in a single request.
+
+        Available params: see http://developer.openstack.org/
+                              api-ref-networking-v2.html#bulkCreatePorts
+        """
+        uri = '/ports'
+        return self.create_resource(uri, kwargs)

tempest_lib/services/network/subnets_client.py

@@ -36,3 +36,12 @@ class SubnetsClient(base.BaseNetworkClient):
     def list_subnets(self, **filters):
         uri = '/subnets'
         return self.list_resources(uri, **filters)
+
+    def create_bulk_subnets(self, **kwargs):
+        """Create multiple subnets in a single request.
+
+        Available params: see http://developer.openstack.org/
+                              api-ref-networking-v2.html#bulkCreateSubnet
+        """
+        uri = '/subnets'
+        return self.create_resource(uri, kwargs)