AC:
If not already exists:
Can see a separate main menu item "Fax Settings"
Can click the separate main menu item and land on a page "Fax Settings" (route=/user/fax-settings)
Can see settings if the feature enabled
Can decide either to use SecretKey or ACL to manage authentication
Can set a custom secret key/token
Can set the renew interval (never, daily, weekly, monthly)
Can see/read the "Last Secret Key Modify Time"
Can add email addresses to get notified about expired key (secret_renew_notify)
Can remove email addresses
Can add ACL Rule (email, ip, destination, use-regexp flag)
Can edit ACL Rule (email, ip, destination, use-regexp flag)
Can remove ACL Rule
Change-Id: I6bc25ab2f73d0dfae3fab224b11396ecdd17ab39