add rule for medium attribute banned
add rule for medium attribute banned

lee-leon/brakeman,github/brakeman,spcoder/brakeman,liqites/brakeman,jlecour/brakeman,liqites/brakeman,masarakki/brakeman,kbrock/brakeman,htdc/brakeman,bf4/brakeman,jlecour/brakeman,cheerfulstoic/brakeman,dfens/brakeman,htdc/brakeman,bf4/brakeman,masarakki/brakeman,jakeatwork/brakeman,github/brakeman,kbrock/brakeman,lee-leon/brakeman,kbrock/brakeman,cheerfulstoic/brakeman,liqites/brakeman,jeffyip/brakeman,bf4/brakeman,jeffyip/brakeman,jakeatwork/brakeman,htdc/brakeman,codeclimate/brakeman-deprecated,spcoder/brakeman,masarakki/brakeman,jlecour/brakeman,spcoder/brakeman,jakeatwork/brakeman,dfens/brakeman,lee-leon/brakeman,codeclimate/brakeman-deprecated,cheerfulstoic/brakeman,dfens/brakeman