Programmatic cache configuration only works for Infinispan 9.1.x. Previous versions can use a linked configuration file to create caches. The InfinispanContainer needed to be updated in order to make the use of GenericContainer methods work.
We're overloading the fluent command setters, because we want to make sure that the "standalone" command is always present.
If needed, setCommand() inherited from GenericContainer can still be used to bypass this behaviour.
