fix config key name in tests

Author: ferhatelmas

stream_framework/tests/settings.py

@@ -6,7 +6,7 @@
     STREAM_CASSANDRA_HOSTS = [os.environ['TEST_CASSANDRA_HOST']]
 
 SECRET_KEY = 'ob_^kc#v536)v$x!h3*#xs6&l8&7#4cqi^rjhczu85l9txbz+W'
-STREAM_CASSANDRA_CONSITENCY_LEVEL = 'ONE'
+STREAM_CASSANDRA_CONSISTENCY_LEVEL = 'ONE'
 
 
 STREAM_REDIS_CONFIG = {