electrum_server: set logging format (#398)

* electrum_server: set logging format

* daemontools: remove 't' multilog argument

contrib/daemontools/log/run

@@ -1,2 +1,2 @@
 #!/bin/sh
-exec multilog t s500000 n10 /path/to/log/dir
+exec multilog s500000 n10 /path/to/log/dir

electrumx_server.py

@@ -18,7 +18,9 @@ from server.controller import Controller
 
 def main():
     '''Set up logging and run the server.'''
-    logging.basicConfig(level=logging.INFO)
+    logging.basicConfig(level=logging.INFO,
+                        format='%(asctime)s %(levelname)-9s %(message)-100s '
+                               '%(name)s [%(filename)s:%(lineno)d]')
     logging.info('ElectrumX server starting')
     try:
         controller = Controller(Env())