Adds the jboss-ebj3.xml file to the "services" project

The addition of the jboss-ejb3.xml file with the security domain
configuration allows the deployment of the "services" project as an
independent project in a Wildfly/JBoss container.

service/src/main/resources/META-INF/jboss-ejb3.xml

+<?xml version="1.1" encoding="UTF-8"?>
+<jboss:ejb-jar xmlns:jboss="http://www.jboss.com/xml/ns/javaee"
+               xmlns="http://java.sun.com/xml/ns/javaee"
+               xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+               xmlns:s="urn:security:1.1"
+               xsi:schemaLocation="http://www.jboss.com/xml/ns/javaee http://www.jboss.org/j2ee/schema/jboss-ejb3-2_0.xsd http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/ejb-jar_3_1.xsd"
+               version="3.1"
+               impl-version="2.0">
+    <assembly-descriptor>
+        <s:security>
+            <ejb-name>*</ejb-name>
+            <s:security-domain>xcs-sample-security-domain</s:security-domain>
+        </s:security>
+    </assembly-descriptor>
+</jboss:ejb-jar>
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