Make library versioning more flexible (SAP#806)

There is a possibility with maven to inject the version number into the build (see https://maven.apache.org/maven-ci-friendly.html).

This will allow us to publish regular releases without permanent PRs for version updates.

bump version (SAP#735)

bump version (SAP#562)

bump version (SAP#433)

add newman doc (SAP#399)

add step healthExecuteCheck (SAP#339)

This step allows to perform a basic health check on an installed application.
It verifies that your app has a simple health endpoint available and that there is no error when calling it.

seleniumExecuteTests - add step to run Selenium tests (SAP#318)

It comes with an extension to executeDocker and executeDockerOnKubernetes to run sidecar containers.

This helps to execute Selenium tests using two Docker images:

1. Execution runtime for tests (e.g. node image)
2. Selenium instance which holds Selenium server + browser

* add documentation & some name cleanup
* include PR feedback
* add step documentation to structure

Merge pull request SAP#163 from alejandraferreirovidal/updateMtaBuild

Update mta build

Disable download logs in Maven by default (SAP#159)

Disable download logs in Maven by default

This commit adds a flag to Maven by default, which disables the messages
like "Downloading from central".

The logger is set to level "warn", so errors will still be visible, but
successful messages won't clutter logs anymore.

This option is also set by default in the GitLab CI template file for
maven.

See [1] for reference on the option.

1: https://stackoverflow.com/a/35653426/8843830

Add configuration support for postActions (SAP#135)