Refactor the Server Command-Lines for Config-Node, Data-Node and the upcoming AI-Node

[chrisdutz]

Currently the server CLI implementation of the existing nodes lacks clarity and needs a major cleaning up.

• Use Apache Commons CLI to implement the general command-line functionality
• Refactor the ConfigNode, DataNode and AiNode CLI parts

The syntax of the commandline issues will change to the follwing format:

{NodeCli} <options> <command>

The commands will be:

• start
• remove

The options will be:

• for the remove command
  • nodeId {some node id}

To be discussed:

• Should it be possible to remove multiple nodes, by passing in a list of ids?
• Should it be possible to remove the current node, by omitting the nodeId parameter?

[OneSizeFitsQuorum]

Should it be possible to remove multiple nodes, by passing in a list of ids?

+1 for removing one node per operation

Should it be possible to remove the current node, by omitting the nodeId parameter?

+1 for doing this