Fixes for reports sentry dsn (lint and missing import).

lib/galaxy/webapps/reports/config.py

@@ -1,6 +1,7 @@
 """Universe configuration builder."""
 import logging
 import os
+import re
 import sys
 
 from six.moves import configparser
@@ -68,13 +69,13 @@ class Configuration(object):
                 raise ConfigurationError("Directory does not exist: %s" % path)
 
     @property
-    def sentry_dsn_public( self ):
+    def sentry_dsn_public(self):
         """
         Sentry URL with private key removed for use in client side scripts,
         sentry server will need to be configured to accept events
         """
         if self.sentry_dsn:
-            return re.sub( r"^([^:/?#]+:)?//(\w+):(\w+)", r"\1//\2", self.sentry_dsn )
+            return re.sub(r"^([^:/?#]+:)?//(\w+):(\w+)", r"\1//\2", self.sentry_dsn)
         else:
             return None