Update terminology for IAM roles (#4056)
Update terminology for IAM roles (#4056)

Roles like "Owner" and "Editor" are now called "basic roles": https://cloud.google.com/iam/docs/understand
GoogleCloudPlatform/magic-modules,GoogleCloudPlatform/magic-modules,GoogleCloudPlatform/magic-modules,GoogleCloudPlatform/magic-modules,GoogleCloudPlatform/magic-modules