Migrate container GET API tests from integration to integration-cli

An initial start to migration of the API tests from integration to
the integration-cli model.

Docker-DCO-1.1-Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com>
hey sorry we got rid of the `errorOut` function in a clean up PR can you rebase and change these to `t.Fatal`s