add pom for jdk11 docker image

use openjdk11.0.2
update maven default to 3.6.0

docker/provision/jdk/java-11.sh

@@ -1,4 +1,4 @@
 apt-get update && apt-get install -y wget
-wget https://download.java.net/java/GA/jdk11/13/GPL/openjdk-11.0.1_linux-x64_bin.tar.gz -O jdk.tar.gz
+wget https://download.java.net/java/GA/jdk11/9/GPL/openjdk-11.0.2_linux-x64_bin.tar.gz -O jdk.tar.gz
 tar -xzf jdk.tar.gz -C /opt/
-mv /opt/jdk-11.0.1 /opt/jdk
+mv /opt/jdk-11.0.2 /opt/jdk