Travis: Use OracleJDK8 to fix
Travis: Use OracleJDK8 to fix

algolia/algoliasearch-client-android,algolia/algoliasearch-client-android,algolia/algoliasearch-client-android,algoliareadmebot/algoliasearch-client-android,algoliareadmebot/algoliasearch-client-android