DATACMNS-961 - Use newer Java 8 on Travis CI.

.travis.yml

@@ -1,6 +1,8 @@
 language: java
+
 jdk:
   - oraclejdk8
+
 env:
   matrix:
     - PROFILE=ci
@@ -8,12 +10,22 @@ env:
     - PROFILE=spring5
     - PROFILE=spring5-next
     - PROFILE=querydsl-next
+
+addons:
+  apt:
+    packages:
+    - oracle-java8-installer
+
 cache:
   directories:
     - $HOME/.m2
+
 sudo: false
+
 install: true
+
 script: "mvn clean dependency:list test -P${PROFILE} -Dsort"
+
 notifications:
   slack:
     secure: PWyr3+7uTnHzZSrJY2DrowwdYODlIeFZB6tzuq+i/vYqMlX2GGXGQN9YmqbKPeaVZBdSI7YrI1UDa5cPAAXoTjn/JewkL0RbdTeIS6PGCpcpAb5rFMYtOhEDBrFB/SRiMH4tw86bRNKq/SrUWmpkzDtTzLrw7JceumgyqnrT6GY=