Fixes missing whitespace in bdist_rpm requires. Cloes #1046

setup.cfg

@@ -14,6 +14,6 @@ all_files = 1
 upload-dir = docs/.build/html
 
 [bdist_rpm]
-requires = billiard>=2.7.3.17
+requires = billiard >= 2.7.3.17
            python-dateutil >= 1.5
            kombu >= 2.4.7