tests: fixes

Author: gsmolk

tests/backup.py

@@ -1927,7 +1927,7 @@ def test_basic_missing_file_permissions(self):
                     repr(self.output), self.cmd))
         except ProbackupException as e:
             self.assertIn(
-                'ERROR: Cannot open source file',
+                'ERROR: Cannot open file',
                 e.message,
                 '\n Unexpected Error Message: {0}\n CMD: {1}'.format(
                     repr(e.message), self.cmd))

tests/restore.py

@@ -845,7 +845,7 @@ def test_restore_with_tablespace_mapping_1(self):
                     repr(self.output), self.cmd))
         except ProbackupException as e:
             self.assertIn(
-                'ERROR: restore destination is not empty:',
+                'ERROR: Restore destination is not empty:',
                 e.message,
                 '\n Unexpected Error Message: {0}\n CMD: {1}'.format(
                     repr(e.message), self.cmd))