Travis: use openjdk for 1.x branch

jknack · web-flow · commit 1b3dea6a7b45 · 2019-09-11T16:20:53.000-03:00
diff --git a/.travis.yml b/.travis.yml
@@ -9,7 +9,7 @@ before_install:
   - export MAVEN_OPTS=-Xmx1024m
 
 jdk:
-  - oraclejdk8
+  - openjdk8
 
 branches:
   only:
