Revert "Update .travis.yml"
Revert "Update .travis.yml"

This reverts commit d831206bf9cbb42ce0d7adae8560c8867615f072.

merlin-zaraza/kafka-elasticsearch-consumer,dhyaneshm/kafka-elasticsearch-standalone-consumer,BigDataDevs/kafka-elasticsearch-consumer,ppine7/kafka-elasticsearch-standalone-consumer,dhyaneshm/kafka-elasticsearch-standalone-consumer,merlin-zaraza/kafka-elasticsearch-consumer,BigDataDevs/kafka-elasticsearch-consumer,dhyaneshm/public-es-indexer,dhyaneshm/public-es-indexer,ppine7/kafka-elasticsearch-standalone-consumer