Update .gitlab-ci to compare efficiency of JDK. JDK tested 7,8,9,10,11

.gitlab-ci.yml

@@ -7,22 +7,34 @@ variables:
 
 
 mvn:jdk7:
-  image: maven:3.5.3-jdk-7
+  image: maven:3.6.0-jdk-7
   script:
     - mvn clean verify -Dgpg.skip
     - mvn exec:java -Dexec.mainClass="be.cylab.java.wowa.training.Example" -Dexec.args="100 60 10 RWS 110"
 
 
 mvn:jdk8:
-  image: maven:3.5.3-jdk-8
+  image: maven:3.6.0-jdk-8
   script:
     - mvn clean verify -Dgpg.skip
     - mvn exec:java -Dexec.mainClass="be.cylab.java.wowa.training.Example" -Dexec.args="100 60 10 RWS 110"
 
 mvn:verify:jdk9:
-  image: maven:3.5.3-jdk-9
+  image: maven:3.6.0-jdk-9
   script:
     - mvn clean verify -Dgpg.skip
     - mvn exec:java -Dexec.mainClass="be.cylab.java.wowa.training.Example" -Dexec.args="100 60 10 RWS 110"
 
 
+mvn:jdk10:
+  image: maven:3.6.0-jdk-10
+  script:
+    - mvn clean verify -Dgpg.skip
+    - mvn exec:java -Dexec.mainClass="be.cylab.java.wowa.training.Example" -Dexec.args="100 60 10 RWS 110"
+
+mvn:jdk11:
+  image: maven:3.6.0-jdk-11
+  script:
+    - mvn clean verify -Dgpg.skip
+    - mvn exec:java -Dexec.mainClass="be.cylab.java.wowa.training.Example" -Dexec.args="100 60 10 RWS 110"
+