Modernize number literals

Use Python-3 compatible syntax, without breaking compatibility with py 2.7

- Octals literals start with 0o to prevent confusion
- The "L" at the end of large int literals is not required as they use
  long on Python 2 automatically.
- Using 'int' instead of 'long' for small numbers is OK in all cases except
  strict type checking checking, e.g. type(0).

https://fedorahosted.org/freeipa/ticket/4985

Reviewed-By: Jan Cholasta <jcholast@redhat.com>

ipapython/ipa_log_manager.py

@@ -180,7 +180,7 @@ def standard_logging_setup(filename=None, verbose=False, debug=False,
         file_handler = dict(name='file',
                             filename=filename,
                             filemode=filemode,
-                            permission=0600,
+                            permission=0o600,
                             level='debug',
                             format=LOGGING_FORMAT_STANDARD_FILE)
         handlers.append(file_handler)