Use openjdk8

Author: glibas

.travis.yml

@@ -14,7 +14,7 @@ jobs:
     scala: 2.12
     script: mvn test -pl scala/scala_2.12,examples -B
   - stage: deploy
-    jdk: oraclejdk8
+    jdk: openjdk8
     script:
     - "./continuous-deployment/before-deploy.sh"
     - "./continuous-deployment/deploy.sh"