Replace deprecated LOG.warn with LOG.warning

LOG.warn is deprecated so this replaces it with LOG.warning.

Change-Id: I4b7b55cce2cfb3f0ae779351daf14e42472d43de
Closes-Bug: 1508442

ironic_lib/disk_utils.py

@@ -87,10 +87,10 @@ def list_partitions(device):
     for line in lines:
         match = _PARTED_PRINT_RE.match(line)
         if match is None:
-            LOG.warn(_LW("Partition information from parted for device "
-                         "%(device)s does not match "
-                         "expected format: %(line)s"),
-                     dict(device=device, line=line))
+            LOG.warning(_LW("Partition information from parted for device "
+                            "%(device)s does not match "
+                            "expected format: %(line)s"),
+                        dict(device=device, line=line))
             continue
         # Cast int fields to ints (some are floats and we round them down)
         groups = [int(float(x)) if i < 4 else x

ironic_lib/tests/test_disk_utils.py

@@ -58,7 +58,7 @@ BYT;
             'parted', '-s', '-m', '/dev/fake', 'unit', 'MiB', 'print',
             use_standard_locale=True, run_as_root=True)
 
-    @mock.patch.object(disk_utils.LOG, 'warn')
+    @mock.patch.object(disk_utils.LOG, 'warning')
     def test_incorrect(self, log_mock, execute_mock):
         output = """
 BYT;

ironic_lib/utils.py

@@ -119,8 +119,8 @@ def unlink_without_raise(path):
         if e.errno == errno.ENOENT:
             return
         else:
-            LOG.warn(_LW("Failed to unlink %(path)s, error: %(e)s"),
-                     {'path': path, 'e': e})
+            LOG.warning(_LW("Failed to unlink %(path)s, error: %(e)s"),
+                        {'path': path, 'e': e})
 
 
 def dd(src, dst, *args):