improvement(nemesis.py): ignore user-profile tables in add-drop column nemesis
improvement(nemesis.py): ignore user-profile tables in add-drop column nemesis

	since CS cannot handles add-remove columns in user-profile mode,
	the MV / SI tables should be skipped on this nemesis

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