Fix travis configuration.

Author: javadev

.travis.yml

@@ -6,10 +6,8 @@ jdk:
 
 matrix:
   include:
+    - jdk: openjdk11
     - jdk: openjdk12
-      before_install:
-        - rm "${JAVA_HOME}/lib/security/cacerts"
-        - ln -s /etc/ssl/certs/java/cacerts "${JAVA_HOME}/lib/security/cacerts"
 
 script:
   - mvn -B clean test jacoco:report