Add support for creating, updating, and deleting projects, as well as
their enabled services and their IAM policies.
Various concessions were made for backwards compatibility, and will be
removed in 0.9 or 0.10.
This change adds a data source to allow declaring IAM policies, as well as a
new resource to represent an existing GCP project. The project resource may
reference an IAM policy, allowing a user to set project-wide permissions.
Evan Brown