CLI: stop reinvent the wheel

[hohwille]

During review of #480 I discovered that we have implemented our own CLI in SpringBootBatchCommandLine. In OASP we do not want to reinvent the wheel. We should use an open-source CLI library instead:

• http://m-m-m.github.io/maven/apidocs/net/sf/mmm/util/cli/api/package-summary.html#package.description (I am biased here as I am the author but with integrated version support, automatic hyphenation and column layout, full I18N, validation, etc.)
• http://args4j.kohsuke.org/sample.html
• https://github.com/docopt/docopt.java
• https://commons.apache.org/proper/commons-cli/

Should be discussed with community. Might also relate to Devcon.

[hohwille]

https://github.com/oasp/oasp4j/blob/develop/modules/batch/src/main/java/io/oasp/module/batch/common/base/SpringBootBatchCommandLine.java#L68 Still present in restaurant sample but that is a dead-end and will be deleted anyhow. With MTS this seems not to be the case anymore: https://github.com/oasp/my-thai-star/blob/develop/java/mtsj/core/src/main/java/io/oasp/application/mtsj/SpringBootBatchApp.java#L24 So we properly utilized spring-boot for that.

Therefore I am closing this issue as wontfix as we will not fix something that we are going to delete a feew month later.