add Liveness and Readyness probes

[vorburger]

oc status -v
In project My Project (myproject) on server https://192.168.42.92:8443

svc/s2i-minecraft-server - 172.30.232.237 ports 8778, 9779
  dc/s2i-minecraft-server deploys istag/s2i-minecraft-server:latest <-
    bc/s2i-minecraft-server source builds https://github.com/vorburger/s2i-minecraft-server.git on istag/s2i-java:latest 
    deployment #1 deployed about a minute ago - 0/1 pods (warning: 2 restarts)

Warnings:
  * pod/s2i-minecraft-server-1-sc9bz has restarted within the last 10 minutes

Info:
  * dc/s2i-minecraft-server has no readiness probe to verify pods are ready to accept traffic or ensure deployment is successful.
    try: oc set probe dc/s2i-minecraft-server --readiness ...
  * dc/s2i-minecraft-server has no liveness probe to verify pods are still running.
    try: oc set probe dc/s2i-minecraft-server --liveness ...

[vorburger]

This will need a YAML deployment template, from what I understand.

[vorburger]

@edewit whenever we want to do this, which should do it based on OASIS-learn-study/oc-port-forward-container@a785784 and OASIS-learn-study/oc-port-forward-container@7f635b3 ....

[edewit]

@vorburger right something like this: https://github.com/edewit/minecraft-che-test/blob/master/.openshiftio/application.yaml#L179-L187