Fix linter errors

certbot-apache/certbot_apache/parser.py

@@ -729,7 +729,7 @@ class ApacheParser(object):
 
     def _fix_path(self, old, new):
         """Helper function to add index to Augeas path if required"""
-        index_re = "\[\d*\]"
+        index_re = r"\[\d*\]"
         if old == new:
             return old
         if re.search(index_re, old):

certbot-apache/certbot_apache/tests/parser_test.py

@@ -12,6 +12,7 @@ from certbot_apache.tests import util
 
 
 class BasicParserTest(util.ParserTest):
+    # pylint: disable=too-many-public-methods
     """Apache Parser Test."""
 
     def setUp(self):  # pylint: disable=arguments-differ