Fix issue where newly published rc's cannot be fetched with full version string
Fix issue where newly published rc's cannot be fetched with full version string

For examples, the following was not working:
http://localhost:9393/metadata?v=12.4.0.rc.0&prerelease=false&nightlies=false&p=el&pv=6&m=x86_64

rhass/opscode-omnitruck,chef/omnitruck,chef/opscode-omnitruck,rhass/opscode-omnitruck,chef/omnitruck,chef/opscode-omnitruck,chef/opscode-omnitruck,juliandunn/opscode-omnitruck,chef/omnitruck,juliandunn/opscode-omnitruck,juliandunn/opscode-omnitruck,rhass/opscode-omnitruck