Adjust Travis release conditions to the new Java 8 baseline

Author: fbenz

.travis.yml

@@ -23,7 +23,7 @@ script:
 after_success:
 - test "$TRAVIS_BRANCH" = "master"
   && test "$TRAVIS_PULL_REQUEST" = "false"
-  && test "$TRAVIS_JDK_VERSION" = "oraclejdk7"
+  && test "$TRAVIS_JDK_VERSION" = "oraclejdk8"
   && "$DEPLOY_DIR/decrypt.sh"
   && mvn deploy --settings "$DEPLOY_DIR/travis-settings.xml" -DskipTests=true -B -V
 branches: