ovn-tester: Provision ports simultaneously.

If we need to provision ports on multiple workers, we may as well do it
all at once.

Suggested-by: Mohammad Heib <[email protected]>
Signed-off-by: Mark Michelson <[email protected]>

ovn-tester/ovn_workload.py

@@ -649,12 +649,14 @@ async def create_cluster_join_switch(self, sw_name):
         )
 
     async def provision_ports(self, n_ports, passive=False):
-        ret_list = []
+        tasks = []
+        ctx = ovn_context.active_context
         for _ in range(n_ports):
             worker = self.select_worker_for_port()
-            ports = await worker.provision_ports(self, 1, passive)
-            ret_list.append(ports[0])
-        return ret_list
+            tasks.append(ctx.create_task(worker.provision_ports(self, 1,
+                                                                passive)))
+        results = await asyncio.gather(*tasks)
+        return [ports[0] for ports in results]
 
     async def unprovision_ports(self, ports):
         for port in ports: