ctdb-tests: Change all cluster setup to use ctdb_test_init()

ctdb-tests: Change all cluster setup to use ctdb_test_init()

ctdb_test_init() now passes any arguments to setup_ctdb().

Update tests that have custom local daemon configuration to call
ctdb_test_init() directly.  Remove the redundant, initial call to
ctdb_test_init() to avoid starting the cluster an extra time.

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>