Review springboot integrationtests inside kogito-runtimes

[gitgabrio]

kogito-runtimes/springboot/integration-tests module has different issues to be reviewed

1. the invoker plugin is configured to also execute install - it seems redundant: double check it
2. the included it projects declares lot of unneeded dependencies, that are also reflected on the compare (reproducible): analyze and eventually remove them
3. the module itself declares all the dependencies needed by the included projects: update them to contain only the actually required ones