artiqd: add bind parameters

frontend/artiqd

@@ -1,6 +1,7 @@
 #!/usr/bin/env python3
 
 import asyncio
+import argparse
 
 from artiq.management.pc_rpc import Server, WaitQuit
 from artiq.management.scheduler import Scheduler
@@ -15,7 +16,19 @@ class Master(WaitQuit):
         self.scheduler.run_once(run_params, timeout)
 
 
+def _get_args():
+    parser = argparse.ArgumentParser(description="PDQ2 controller")
+    parser.add_argument(
+        "--bind", default="::1",
+        help="hostname or IP address to bind to")
+    parser.add_argument(
+        "--port", default=8888, type=int,
+        help="TCP port to listen to")
+    return parser.parse_args()
+
+
 def main():
+    args = _get_args()
     loop = asyncio.get_event_loop()
     try:
         scheduler = Scheduler()
@@ -23,7 +36,7 @@ def main():
         try:
             master = Master(scheduler)
             server = Server(master)
-            loop.run_until_complete(server.start("::1", 8888))
+            loop.run_until_complete(server.start(args.bind, args.port))
             try:
                 loop.run_until_complete(master.wait_quit())
             finally: