Don't overwrite an explicitly set verify option
Don't overwrite an explicitly set verify option

In some cases one wants to explicitly set this option to False. This
happens for example when the external URL is another DC/OS cluster,
in such a case the CA certificate wouldn't be available.

dcos/dcos-cli,dcos/dcos-cli,kensipe/dcos-cli,kensipe/dcos-cli,kensipe/dcos-cli,kensipe/dcos-cli,kensipe/dcos-cli,dcos/dcos-cli,dcos/dcos-cli,dcos/dcos-cli