Fixes#1494.
* Add import support for `google_logging_organization_sink`, `google_logging_folder_sink`, `google_logging_billing_account_sink`.
Using `StateFunc` over `DiffSuppressFunc` should only affect tests; for some reason `TestAccLoggingFolderSink_folderAcceptsFullFolderPath` expected a `folder` value of `folders/{{id}}` vs expecting `{{id}}` when only `DiffSuppressFunc` was used, when in real use `DiffSuppressFunc` should be sufficient.
* Vendor cloud logging api
* Add logging sink support
* Remove typo
* Set Filter simpler
* Rename typ, typName to resourceType, resourceId
* Handle notFoundError
* Use # instead of // for hcl comments
* Cleanup test code
* Change testAccCheckLoggingProjectSink to take a provided api object
* Fix whitespace change after merge conflict
