* Add configuration to send build scans to https://ge.apache.org
* Add `.mvn` directories to IT tests projects that lack one
Some of the integration tests to do not have `.mvn` directories and
search up the project structure until they find the `.mvn` directory
of the root project.
This change adds `.mvn` directories with empty `maven.config` files so
that the sample projects in VCS will be as close as possible to those
executed during integration testing
