auth: fix exhibitor URI (#707)
auth: fix exhibitor URI (#707)


dcos/dcos-cli,kensipe/dcos-cli,kensipe/dcos-cli,sis-tools/dcos-cli,dcos/dcos-cli,dcos/dcos-cli,dcos/dcos-cli,kensipe/dcos-cli,kensipe/dcos-cli,kensipe/dcos-cli,sis-tools/dcos-cli,dcos/dcos-cli,mesosphere/dcos-cli,sis-tools/dcos-cli,mesosphere/dcos-cli,mesosphere/dcos-cli