* artifactPrepareVersion: additional options
it is now possible to use
* a Unix timestamp number
* a short commit hash
* Add dedicated Docker versioning scheme
* add possible values for xsDeploy
* add possible values for protecodeExecuteScan
* add possible values for mtaBuild
* add possible values for artifactPrepareVersion
* add possible values for sonarExecuteScan
* add possible values for detectExecuteScan
* add possible values for checkmarxExecuteScan
* Update gctsCreateRepository.yaml
This change enables the use of the artifactPrepareVersion go step instead
of the deprecated artifactSetVersion groovy implementation for the Cloud
SDK Pipeline. The groovy wrapper for the artifactPrepareVersion step now
enables the use of the download cache and minor issues are fixed.