When update with unexisting env template, the output contain '<'
and '>'.
murano env-template-update 849c781b2ef84a6a8961b520c11f7322 test
404 Not Found: EnvTemplate <TempId 849c781b2ef84a6a8961b520c11f7322>
is not found (HTTP 404)
Change-Id: Ifcbdc4cb5846de35e55fbeeaf21f9ce3d4748e36