feat: Update AuthHelper for elevated_access testing

Relates to #63 (closed)

testing/src/main/java/org/eclipsefoundation/testing/helpers/AuthHelper.java

 /*********************************************************************
-* Copyright (c) 2022 Eclipse Foundation.
+* Copyright (c) 2022, 2023 Eclipse Foundation.
 *
 * This program and the accompanying materials are made
 * available under the terms of the Eclipse Public License 2.0
 * which is available at https://www.eclipse.org/legal/epl-2.0/
 *
 * Author: Martin Lowe <martin.lowe@eclipse-foundation.org>
+*       Zachary Sabourin <zachary.sabourin@eclipse-foundation.org>
 *
 * SPDX-License-Identifier: EPL-2.0
 **********************************************************************/
@@ -19,10 +20,10 @@ import io.restassured.filter.session.SessionFilter;
 import io.restassured.specification.RequestSpecification;
 
 /**
- * Contains central values for testing authentication in application. This helps reduce variables in testing and
- * concentrate on the actual code being tested.
+ * Contains central values for testing authentication in application. This helps
+ * reduce variables in testing and concentrate on the actual code being tested.
  * 
- * @author Martin Lowe
+ * @author Martin Lowe, Zachary Sabourin
  *
  */
 public class AuthHelper {
@@ -30,19 +31,29 @@ public class AuthHelper {
     public static final String EMAIL_CLAIM_VALUE = "oli.pearson@eclipse.org";
     public static final String FAMILY_NAME_CLAIM_VALUE = "Pearson";
     public static final String GIVEN_NAME_CLAIM_VALUE = "Oli";
-    public static final String EMAIL_CLAIM_KEY = "family_name";
+
+    public static final String TEST_ELEVATED_USER_NAME = "staffmember";
+    public static final String ELEVATED_EMAIL_CLAIM_VALUE = "staffmember@eclipse.org";
+    public static final String ELEVATED_FAMILY_NAME_CLAIM_VALUE = "Staff";
+    public static final String ELEVATED_GIVEN_NAME_CLAIM_VALUE = "Member";
+
+    public static final String NAME_KEY = "name";
+    public static final String EMAIL_CLAIM_KEY = "email";
     public static final String FAMILY_NAME_CLAIM_KEY = "family_name";
     public static final String GIVEN_NAME_CLAIM_KEY = "given_name";
+
     public static final String ISSUER_FIELD_KEY = "issuer";
     public static final String ISSUER_FIELD_VALUE = "https://auth.eclipse.org";
 
     public static final String DEFAULT_ROLE = "user";
     public static final String PORTAL_ADMIN_ROLE = "eclipsefdn_membership_portal_admin";
+    public static final String PORTAL_ELEVATED_ROLE = "eclipsefdn_membership_portal_elevated_access";
 
     /**
      * Retrieves a CSRF value for the given session using restassured.
      * 
-     * @param sessionFilter the current session object (needed for consistent CSRF value)
+     * @param sessionFilter the current session object (needed for consistent CSRF
+     *                      value)
      * @return
      */
     public static String getCSRFValue(SessionFilter sessionFilter) {