Update task cat to use currently existing CLI commands
Update task cat to use currently existing CLI commands

[#134370909]
Signed-off-by: Utako Ueda <c5738b62d376b6008768780d19980e9b499f1bae@pivotal.io>

matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests