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If the FAB provider is installed and the FAB auth manager is configured or plugins with FAB views are present, during webserver initialization the provider will create an appbuilder app to be used for that purpose.  We will do our best to avoid extra work if possible, but we will iron out the specifics during implementation. For example, the loading order of plugins and providers may make it difficult to detect if a plugin defines FAB views when the FAB provider is being loaded.

Then When the FAB auth manager is used, there are some db tables that need to be created or migrated. Instead of being tightly integrated into the sqlalchemy models in core, the FAB provider will take complete ownership of its db tables and maintain its own db cli commands (like migrate/reset/etc).

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