flak8 spacing fixes.

Author: rouilj

roundup/cgi/exceptions.py

@@ -9,9 +9,11 @@
 
 from roundup.exceptions import RoundupException
 
+
 class RoundupCGIException(RoundupException):
     pass
 
+
 class HTTPException(RoundupCGIException):
     pass
 
@@ -54,12 +56,14 @@ class FormError(ValueError):
     """
     pass
 
+
 class IndexerQueryError(RoundupException):
     """Raised to handle errors from FTS searches due to query
        syntax errors.
     """
     pass
 
+
 class SendFile(RoundupException):
     """Send a file from the database."""