Fixed PEP-0008 violation, extraneous whitespace before colon in dictionary literals.

http://www.python.org/dev/peps/pep-0008/#whitespace-in-expressions-and-statements

git-svn-id: https://svn.apache.org/repos/asf/bloodhound/trunk@1484369 13f79535-47bb-0310-9956-ffa450edef68