tests: start cql_test_env without binding to messaging port
tests: start cql_test_env without binding to messaging port

Allows running tests in parallel.

duarten/scylla,avikivity/scylla,scylladb/scylla,duarten/scylla,avikivity/scylla,scylladb/scylla,duarten/scylla,scylladb/scylla,scylladb/scylla,avikivity/scylla