fix(nemesis.py): don't use disableautocompaction if not supported
fix(nemesis.py): don't use disableautocompaction if not supported

	check if scylla version of nodetool supports disableautocompaction,
	and only run it if so, otherwise skip.

scylladb/scylla-cluster-tests,scylladb/scylla-longevity-tests,scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests,scylladb/scylla-longevity-tests,scylladb/scylla-longevity-tests,scylladb/scylla-cluster-tests