416882 updated tests to match new embedded maven runtime

Signed-off-by: Igor Fedorenko <igor@ifedorenko.com>
416882 cleanup and update test artifact repositories

Signed-off-by: Igor Fedorenko <igor@ifedorenko.com>
416882 added MavenModelManager#readDependencyTree unit test

Signed-off-by: Igor Fedorenko <igor@ifedorenko.com>