change pushd to cd in yeller deploy script
change pushd to cd in yeller deploy script

[#101844740]

longnguyen11288/concourse,beni55/concourse,holgero/concourse,cjcjameson/concourse,zachgersh/concourse,zachgersh/concourse,holgero/concourse,beni55/concourse,longnguyen11288/concourse,concourse/concourse,sedouard/concourse,zachgersh/concourse,sedouard/concourse,cjcjameson/concourse,CloudCredo/concourse,concourse/concourse,concourse/concourse,longnguyen11288/concourse,sedouard/concourse,CloudCredo/concourse,concourse/concourse,concourse/concourse,CloudCredo/concourse,cjcjameson/concourse,holgero/concourse,beni55/concourse