DATAREDIS-584 - Use newer Java 8 on Travis CI.

.travis.yml

@@ -1,15 +1,26 @@
 language: java
+
 jdk:
   - oraclejdk8
+
 env:
   matrix:
     - PROFILE=spring42
     - PROFILE=spring42-next
     - PROFILE=spring43-next
     - PROFILE=spring5-next
+
+addons:
+  apt:
+    packages:
+    - oracle-java8-installer
+
 cache:
   directories:
     - $HOME/.m2
+
 sudo: false
+
 install: true
+
 script: travis_wait make test SPRING_PROFILE=${PROFILE}