SSO - Create Authorizations configuration form

[sherakama]

User Stories:

• As an administrator I want to be able to enable and disable authentication for local Drupal accounts
• As an administrator I want to be able to specify which roles can log in with local Drupal accounts and which cannot so that I may separate the authentication scheme for different types of users.
• As an administrator I want to be able to specify which users can log in with local Drupal accounts even if they were registered as a SAML user in the first place.
• As an administrator I want to be able to prevent successful log in to anyone except a specific set of sunet ids so that no one outside my group can log in.
• As an administrator I want to be able to allow anyone with a valid sunet id to log in.
• As an administrator I want to be able to allow successful log in to a specific set of workgroups so that no one outside my group can authenticate with the website.

Functional Example:
https://ssp-demo.anchorage.stanford.edu/admin/config/stanford/stanford_ssp/authorizations