Add status outputs to the CLI

[Bekreth]

Currently, when running the command line client, the output is a spring initialization. After the StartupRunner, the system hangs for a while while uploading the JAR and launching the process. It would be nice to have some type of output during this period to show what state the upload is in to prevent premature job cancelation.

[jessemillar]

I believe I'm seeing the same pain point. My Gatling upload job has been stuck at the following output for the last 17 hours. The lack of verbose logging certainly isn't helpful in my situation (assuming I'm having some sort of network issue that's currently a black box).

14:05:49    ,--.,--.        ,--.   ,----.             ,--.  ,--.,--.                
14:05:49  ,-|  |`--' ,---.,-'  '-.'  .-./    ,--,--.,-'  '-.|  |`--',--,--,  ,---.  
14:05:49 ' .-. |,--.(  .-''-.  .-'|  | .---.' ,-.  |'-.  .-'|  |,--.|      \| .-. | 
14:05:49 \ `-' ||  |.-'  `) |  |  '  '--'  |\ '-'  |  |  |  |  ||  ||  ||  |' '-' ' 
14:05:49  `---' `--'`----'  `--'   `------'  `--`--'  `--'  `--'`--'`--''--'.`-  /  
14:05:49                                                                    `---'   
14:05:52 2019-08-12 21:05:51.738  INFO 11926 --- [ost-startStop-1] com.alh.gatling.JerseyConfig             : Registering MetricRegistry with Jersey.
14:05:52 2019-08-12 21:05:51.745  INFO 11926 --- [ost-startStop-1] com.alh.gatling.JerseyConfig             : Scanning for Jersey controllers in 'com.alh.gatling.endpoint.v1' package.
14:05:52 2019-08-12 21:05:51.749  INFO 11926 --- [ost-startStop-1] com.alh.gatling.JerseyConfig             : Registering Jersey endpoint class:  com.alh.gatling.endpoint.v1.LogResource
14:05:56 2019-08-12 21:05:55.638  INFO 11926 --- [           main] com.alh.gatling.client.UploadUtils       : /app/distributed/uploads//04f47fbc-45c0-4e8a-9d26-eccc54c83d00/performance-tests-1.0-SNAPSHOT.jar
14:05:56 2019-08-12 21:05:55.754  INFO 11926 --- [           main] com.alh.gatling.client.UploadUtils       : 

Is this repo deprecated in favor of https://github.com/Abiy/distGatling/tree/master/gatling-client? If so, this repo should be marked as "archived" in the GitHub UI.