OPENDJ-3160 Factor out DN template support into separate class

Matthew Swift

08.58.2016 9cfc08902f5d1a22f4f5436b0facc8c047d45ed6

 opendj-rest2ldap/src/main/java/org/forgerock/opendj/rest2ldap/SubResourceSingleton.java

@@ -111,7 +111,7 @@
     * @return A reference to this object.
     */
    public SubResourceSingleton dnTemplate(final String dnTemplate) {
        this.dnTemplate = dnTemplate;
        this.dnTemplateString = dnTemplate;
        return this;
    }