Add kafka 1.0.0 to travis integration tests

Author: dpkp

.travis.yml

@@ -12,6 +12,7 @@ env:
     - KAFKA_VERSION=0.9.0.1
     - KAFKA_VERSION=0.10.2.1
     - KAFKA_VERSION=0.11.0.2
+    - KAFKA_VERSION=1.0.0
 
 sudo: false