bf-rollups-delay.py support new version of Cassandra with CQL 1.4.0

[esala116]

status error An attempt was made to connect to each of the servers twice, but none of the attempts succeeded. The last failure was TTransportException: Could not connect to 192.168.1.1:9160
Traceback (most recent call last):
File "blueflood-rollup-delay.py", line 139, in
main(sys.argv[1])
File "blueflood-rollup-delay.py", line 136, in main
raise ex
pycassa.pool.AllServersUnavailable: An attempt was made to connect to each of the servers twice, but none of the attempts succeeded. The last failure was TTransportException: Could not connect to 192.168.1.1:9160