kiji-mapreduce: KIJIMR-300. Disable IntegrationTestCassandraKijiTableInputFormat until we understand why it fails on Jenkins

issue: https://jira.kiji.org/browse/KIJIMR-300
review: https://review.kiji.org/r/2104
commit: https://github.com/kijiproject/kiji-mapreduce/commit/93412bcd8b4c646a77d4629a93aa8f638aab3048