add unit test for 'validate' package
add unit test for 'validate' package

BrickXu/cadvisor,vishh/cadvisor,carmark/cadvisor,normanjoyner/cadvisor,IFTTT/cadvisor,derekwaynecarr/cadvisor,BrickXu/cadvisor,pwittrock/cadvisor,IFTTT/cadvisor,dchen1107/cadvisor,feiskyer/cadvisor,ainsleyc/cadvisor,dchen1107/cadvisor,derekwaynecarr/cadvisor,jhjeong-kr/cadvisor,IFTTT/cadvisor,f0/cadvisor,BrickXu/cadvisor,normanjoyner/cadvisor,pwittrock/cadvisor,dchen1107/cadvisor,dchen1107/cadvisor,BrickXu/cadvisor,IFTTT/cadvisor,jhjeong-kr/cadvisor,ncdc/cadvisor,BrickXu/cadvisor,derekwaynecarr/cadvisor,timstclair/cadvisor,derekwaynecarr/cadvisor,ainsleyc/cadvisor,f0/cadvisor,guoshimin/cadvisor,ncdc/cadvisor,IFTTT/cadvisor,vishh/cadvisor,jhjeong-kr/cadvisor,vishh/cadvisor,linux-on-ibm-z/cadvisor,jhjeong-kr/cadvisor,erSitzt/cadvisor,ncdc/cadvisor,derekwaynecarr/cadvisor,ncdc/cadvisor,f0/cadvisor,timstclair/cadvisor,ainsleyc/cadvisor,guoshimin/cadvisor,linux-on-ibm-z/cadvisor,ncdc/cadvisor,f0/cadvisor,erSitzt/cadvisor,feiskyer/cadvisor,feiskyer/cadvisor,shilpamayanna/cadvisor,pwittrock/cadvisor,jhjeong-kr/cadvisor,linux-on-ibm-z/cadvisor,carmark/cadvisor,erSitzt/cadvisor,f0/cadvisor,erSitzt/cadvisor,datawisesystems/cadvisor,timstclair/cadvisor,shilpamayanna/cadvisor,erSitzt/cadvisor,datawisesystems/cadvisor,dchen1107/cadvisor,guoshimin/cadvisor,ainsleyc/cadvisor