py-i2phosts-master: chown log_file before daemonization

Master log file first opened as root, than daemonization with privilege
drop happens and master then unable to log to this logfile because of
insufficient permissions. So chown logfile to "runas" user to avoid this
situation.

bin/py-i2phosts-master

@@ -160,6 +160,7 @@ if not args.debug and not args.verbose:
 		pw_entry = pwd.getpwnam(runas)
 		d.uid = pw_entry[2]
 		d.gid = pw_entry[3]
+	os.chown(config['log_file'], d.uid, d.gid)
 	d.open() # become daemon
 log = get_logger(filename=log_file, log_level=log_level)
 log.info('started')