Updating travis yaml to only run java_jdk8
Updating travis yaml to only run java_jdk8
googleapis/java-bigtable-hbase,kevinsi4508/cloud-bigtable-client,sduskis/cloud-bigtable-client,rameshdharan/cloud-bigtable-client,googleapis/java-bigtable-hbase,rameshdharan/cloud-bigtable-client,sduskis/cloud-bigtable-client,kevinsi4508/cloud-bigtable-client,googleapis/java-bigtable-hbase