* Golang step metadata: Config aliases for steps
This will ease following scenarios:
* config migration due to step name changes
* re-use of more general config, e.g. `mavenExecute` in `mavenBuild`
* fix CodeClimate finding
* Fix panic if original stage config does not exist yet
* Protecode as go implementation
Co-authored-by: Sven Merk <33895725+nevskrem@users.noreply.github.com>
Co-authored-by: Oliver Nocon <33484802+OliverNocon@users.noreply.github.com>