[ci] Add openjdk11

hazendaz · mariuszs · commit b9c5fed6cb60 · 2020-01-02T11:48:54.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,7 @@
 language: java
 
 jdk:
+  - openjdk11
   - openjdk8
 
 before_script: ./mvnw install -N
