- Add DebugAddress helper to validate and parse the (legacy) debug-port and debug-address. Later has precedence.
 - Streamline the CommandBuilder implementation ensuring that the Java and Docker specific code runs inside the command builder and is not spilled out to the AbstractLocalDeployerSupport or AppLocalDeployer.
 - Update affected tests (also migrate those to JUnit5).
 - Improve code cohesion and remove death code.

 - Change GUID from 'port' to 'deployerId-index'.
 - Allow the Docker and Java command builder use different port range. Needed to allow in-container Skipper to operate with both maven and docker resources.

 - use <deploymentId>-<instance index> as container name to allow support for multiple app instances

- if the DOCKER_CONTAINER_NAME_KEY is not explicitly set use the dockerId for container name.
 - By default remove the docker containers on exist.
 - Add a docker.deleteContainerOnExit property to control the removal of stopped containers. Set to true by default.

 Related to: spring-cloud/spring-cloud-dataflow#3966
 Related to: spring-cloud/spring-cloud-dataflow#3643
 Follow up of: https://github.com/spring-cloud/spring-cloud-deployer-local/commit/71a8153b2c46ba10b35ebb5af274724eab6d7b08

- When getting logs for stream and task apps we used
  to just read stderr if it had some content which
  is a bit problematic as stderr may have some content
  which is not a real error.
- This i.e. happens with JAVA_TOOL_OPTIONS env variable.
- Now simply getting both.
- Fixes #193

- Fixes #194