make it possible to add Java command line parameters

[jhutar]

Currently it is AFAICT not possible to change Java command line parameters used to start the registry:

~ $ ps axf | tee
PID   USER     TIME  COMMAND
    1 10005900  0:19 java -Dquarkus.http.host=0.0.0.0 -Djava.util.logging.manager=org.jboss.logmanager.LogManager -javaagent:/opt/agent-bond/agent-bond.jar=jmx_exporter{{9779:/opt/agent-bond/jmx_exporter_config.yml}} -Xmx650m -XX:ParallelGCThreads=1 -XX:ConcGCThreads=1 -Djava.util.concurrent.ForkJoinPool.common.parallelism=1 -XX:CICompilerCount=2 -XX:+UseParallelGC -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -XX:MinHeapFreeRatio=20 -XX:MaxHeapFreeRatio=40 -XX:+ExitOnOutOfMemoryError -cp . -jar /deployments/apicurio-registry-storage-streams-1.2.3.Final-runner.jar

It night be useful if it is possible to tune these parameters or add more of them.

[jsenko]

It's possible to add JAVA_OPTIONS environment variable to the deployment, but the operator does not support this directly at the moment.

[jsenko]

Note: Document the workaround for 1.0.0.