improvement(nodetool/cqlsh cmdline): add brackets for password parameter
improvement(nodetool/cqlsh cmdline): add brackets for password parameter

The brackets are requested if the password contains special character.
eg: !

$ nodetool -u cassandra -pcassandra!-
-bash: !-: event not found

Signed-off-by: Amos Kong <eb01d8f828a6c9a20be4534e72e049aaf41503df@scylladb.com>

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