Use OpenJDK instead of OracleJDK 10 in Travis builds (#1302)

bfc0a3cb · Evgenij Ryazanov · GitHub · 15866142 · bfc0a3cb
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,7 +8,7 @@ cache:

 matrix:
  include:
-    - jdk: oraclejdk10
+    - jdk: openjdk10
      dist: trusty
      group: edge
      sudo: required