Run CI against Kafka 0.8.2.0 and 0.8.1.1

.travis.yml

@@ -6,7 +6,11 @@ go:
 - tip
 
 env:
-- KAFKA_INSTALL_ROOT=/home/travis/kafka KAFKA_HOSTNAME=localhost
+  global:
+  - KAFKA_INSTALL_ROOT=/home/travis/kafka KAFKA_HOSTNAME=localhost
+  matrix:
+  - KAFKA_VERSION=0.8.2.0
+  - KAFKA_VERSION=0.8.1.1
 
 before_install:
 - export REPOSITORY_ROOT=${TRAVIS_BUILD_DIR}

vagrant/install_cluster.sh

@@ -2,8 +2,6 @@
 
 set -ex
 
-KAFKA_VERSION=0.8.2.0
-
 mkdir -p ${KAFKA_INSTALL_ROOT}
 if [ ! -f ${KAFKA_INSTALL_ROOT}/kafka-${KAFKA_VERSION}.tgz ]; then
     wget --quiet http://apache.mirror.gtcomm.net/kafka/${KAFKA_VERSION}/kafka_2.10-${KAFKA_VERSION}.tgz -O ${KAFKA_INSTALL_ROOT}/kafka-${KAFKA_VERSION}.tgz

vagrant/provision.sh

@@ -7,6 +7,7 @@ yes | apt-get install default-jre
 
 export KAFKA_INSTALL_ROOT=/opt
 export KAFKA_HOSTNAME=192.168.100.67
+export KAFKA_VERSION=0.8.2.0
 export REPOSITORY_ROOT=/vagrant
 
 sh /vagrant/vagrant/install_cluster.sh