remove defensive persistent disk check
remove defensive persistent disk check

sedouard/concourse,longnguyen11288/concourse,beni55/concourse,sedouard/concourse,CloudCredo/concourse,Amit-PivotalLabs/concourse,beni55/concourse,cjcjameson/concourse,concourse/concourse,CloudCredo/concourse,CloudCredo/concourse,Amit-PivotalLabs/concourse,concourse/concourse,squeedee/concourse,Amit-PivotalLabs/concourse,sedouard/concourse,longnguyen11288/concourse,holgero/concourse,jbayer/concourse,squeedee/concourse,squeedee/concourse,cjcjameson/concourse,holgero/concourse,beni55/concourse,jbayer/concourse,holgero/concourse,concourse/concourse,zachgersh/concourse,longnguyen11288/concourse,concourse/concourse,concourse/concourse,zachgersh/concourse,zachgersh/concourse,cjcjameson/concourse,jbayer/concourse