ipapython.sysrestore: Use str methods instead of functions from the string module

For historical reasons, the string module contained some functions
that mirror methods of the str type. These are eremoved in Python 3.

Use str methods instead.

Part of the work for https://fedorahosted.org/freeipa/ticket/5638

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

ipapython/sysrestore.py

@@ -28,7 +28,6 @@ import os.path
 import shutil
 from ipapython.ipa_log_manager import root_logger
 import random
-import string
 
 import six
 from six.moves.configparser import SafeConfigParser
@@ -133,7 +132,8 @@ class FileStore:
 
         stat = os.stat(path)
 
-        self.files[filename] = string.join([str(stat.st_mode),str(stat.st_uid),str(stat.st_gid),path], ',')
+        template = '{stat.st_mode},{stat.st_uid},{stat.st_gid},{path}'
+        self.files[filename] = template.format(stat=stat, path=path)
         self.save()
 
     def has_file(self, path):
@@ -143,7 +143,7 @@ class FileStore:
         """
         result = False
         for (key, value) in self.files.items():
-            (mode,uid,gid,filepath) = string.split(value, ',', 3)
+            (mode,uid,gid,filepath) = value.split(',', 3)
             if (filepath == path):
                 result = True
                 break
@@ -176,7 +176,7 @@ class FileStore:
         filename = None
 
         for (key, value) in self.files.items():
-            (mode,uid,gid,filepath) = string.split(value, ',', 3)
+            (mode,uid,gid,filepath) = value.split(',', 3)
             if (filepath == path):
                 filename = key
                 break
@@ -218,7 +218,7 @@ class FileStore:
 
         for (filename, value) in self.files.items():
 
-            (mode,uid,gid,path) = string.split(value, ',', 3)
+            (mode,uid,gid,path) = value.split(',', 3)
 
             backup_path = os.path.join(self._path, filename)
             if not os.path.exists(backup_path):
@@ -267,7 +267,7 @@ class FileStore:
         filename = None
 
         for (key, value) in self.files.items():
-            (mode,uid,gid,filepath) = string.split(value, ',', 3)
+            (mode,uid,gid,filepath) = value.split(',', 3)
             if (filepath == path):
                 filename = key
                 break