Add OpenID test for programmatic login

[OndroMih]

A test for this scenario:

• On insecure page, user presses a login button
• This executes a method on a backing bean
• The method calls SecurityContect.authenticate()

Expected outcome:

• The request initiated by the button ends in a redirect to the OpenID provider to authenticate, similarly to the case when the server initiates authentication after a secure resource is accessed