* Allow make deploy using token
Introduce support for `MM_ADMIN_TOKEN` as an alternative to defining `MM_ADMIN_USERNAME` and `MM_ADMIN_PASSWORD.
* reverse README.md authentication schemes
* wrap errors
* Update build/deploy/main.go
Co-Authored-By: Ben Schumacher <ben.schumacher@mattermost.com>
* fix linting
Co-authored-by: Ben Schumacher <ben.schumacher@mattermost.com>