Integration test for https://wso2.org/jira/browse/MB-850

This test case test whether admin with a different admin role name is recognised as an admin
role in the server.

Test Steps:
     * Admin role name is changed to "Administrator" using user-mgt.xml and restart server
     * Log in to admin account and create a queue, "testQueue"
     * New user, John, created with admin privileges.
     * Log out from admin account and log back in with john account
     * Browse the "testQueue". Since john is an admin he should be able to view the queue.