Move wait_for_service into client; it'll be used from other things.

imager/wait_for_service.py

@@ -1,36 +0,0 @@
-#!/usr/bin/python3
-
-import argparse
-import socket
-import time
-
-
-parser = argparse.ArgumentParser(description='iconograph wait_for_service')
-parser.add_argument(
-    '--host',
-    dest='host',
-    action='store',
-    required=True)
-parser.add_argument(
-    '--service',
-    dest='service',
-    action='store',
-    required=True)
-FLAGS = parser.parse_args()
-
-
-def main():
-  conn = (FLAGS.host, FLAGS.service)
-  print('Trying to connect to %s:%s' % conn)
-  while True:
-    try:
-      socket.create_connection(conn, timeout=5)
-      break
-    except Exception:
-      time.sleep(1)
-      continue
-  print('Connection successful')
-
-
-if __name__ == '__main__':
-  main()