XRDDEV-1874 Adding support for JRE 11

* add dependency to Java SOAP library (that is no longer a part of the Java 11 distribution)
* example project depends on the snapshot version of XRd4J
* example Dockerfile based on JRE 11

example-adapter/Dockerfile

@@ -1,5 +1,5 @@
-# Base java:8
-FROM java:8
+# Base java:11
+FROM adoptopenjdk/openjdk11:jre-11.0.11_9
 
 # Add Rest Gateway jar to container
 ADD target/example-adapter-*.jar example-adapter.jar
@@ -8,4 +8,4 @@ ADD target/example-adapter-*.jar example-adapter.jar
 ENTRYPOINT ["java", "-jar", "/example-adapter.jar"]
 
 # Expose Tomcat
-EXPOSE 8080
+EXPOSE 8080

example-adapter/pom.xml

@@ -257,7 +257,7 @@
                 <activeByDefault>true</activeByDefault>
             </activation>
             <properties>
-                <xrd4j.version>0.3.0</xrd4j.version>
+                <xrd4j.version>0.4.0-SNAPSHOT</xrd4j.version>
                 <wsdl.path>example.xroad-6.4.wsdl</wsdl.path>
             </properties>
         </profile>

src/pom.xml

@@ -32,6 +32,14 @@
         <sonar.junit.reportPaths>common/target/surefire-reports,client/target/surefire-reports,rest/target/surefire-reports,server/target/surefire-reports</sonar.junit.reportPaths>
     </properties>
     <dependencies>
+        <!-- SOAP API for JRE 11 support -->
+        <dependency>
+            <groupId>com.sun.xml.messaging.saaj</groupId>
+            <artifactId>saaj-impl</artifactId>
+            <version>1.3.28</version>
+            <scope>runtime</scope>
+        </dependency>
+
         <!-- Logging API: SLF4J -->
         <dependency>
             <groupId>org.slf4j</groupId>