* rename firewall policy module, fix outputs
* add TOC to firewall policy module
* don't depend policy on parent id
* remove firewall policy from resource management modules
* remove factory conditionals
* fast net a and b
* fast stages
* fast tfdoc
* fast tfdoc
* remove unused test
* fix shielded folder blueprint
* fix shielded folder blueprint
* group_iam support for organization
* group_iam support for folder
* fix typo in variable description
* add group_iam to project module
* update project module README
* Add sink support to folder module
* Make folder creation optional.
* Add logging sinks to the organization module
* Add logging sink support to project module
* Update readme
With this commit the folders module (now called simply 'folder') only
creates a single google_folder resource. Support for creating multiple
folders is no longer needed since Terraform 0.13 added for_each support
to modules.