Add cloud endpoints resource (hashicorp#933)

OpenAPI & gRPC Endpoints on Compute Engine.

New Resource:
- Endpoints Service Create/Read/Delete
- Example terraform config

docs/r/endpoints_service.html.markdown

@@ -0,0 +1,63 @@
+---
+layout: "google"
+page_title: "Google: google_endpoints_service"
+sidebar_current: "docs-google-endpoints-service"
+description: |-
+  Creates and rolls out a Google Endpoints service.
+---
+
+# google_endpoints_service
+
+This resource creates and rolls out a Cloud Endpoints service using OpenAPI or gRPC.  View the relevant docs for [OpenAPI](https://cloud.google.com/endpoints/docs/openapi/) and [gRPC](https://cloud.google.com/endpoints/docs/grpc/).
+
+## Example Usage
+
+```hcl
+resource "google_endpoints_service" "openapi_service" {
+  service_name = "api-name.endpoints.project-id.cloud.goog"
+  project = "project-id"
+  openapi_config = "${file("openapi_spec.yml")}"
+}
+
+resource "google_endpoints_service" "grpc_service" {
+  service_name = "api-name.endpoints.project-id.cloud.goog"
+  project = "project-id"
+  grpc_config = "${file("service_spec.yml")}"
+  protoc_output = "${file("compiled_descriptor_file.pb")}"
+}
+```
+
+The example in `examples/endpoints_on_compute_engine` shows the API from the quickstart running on a Compute Engine VM and reachable through Cloud Endpoints, which may also be useful.
+
+## Argument Reference
+
+The following arguments are supported:
+* `service_name`: (Required) The name of the service.  Usually of the form `$apiname.endpoints.$projectid.cloud.goog`.
+* `openapi_config`: (Optional) The full text of the OpenAPI YAML configuration as described [here](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/2.0.md).  Either this, or *both* of `grpc_config` and `protoc_output` must be specified.
+* `grpc_config`: (Optional) The full text of the Service Config YAML file (Example located [here](https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/endpoints/bookstore-grpc/api_config.yaml)).  If provided, must also provide `protoc_output`.  `open_api` config must *not* be provided.
+* `protoc_output`: (Optional) The full contents of the Service Descriptor File generated by protoc.  This should be a compiled .pb file.
+* `project`: (Optional) The project ID that the service belongs to.  If not provided, provider project is used.
+
+## Attributes Reference
+In addition to the arguments, the following attributes are available:
+* `config_id`: The autogenerated ID for the configuration that is rolled out as part of the creation of this resource.  Must be provided to compute engine instances as a tag.
+* `dns_address`: The address at which the service can be found - usually the same as the service name.
+* `apis`: A list of API objects; structure is documented below.
+* `endpoints`: A list of Endpoint objects; structure is documented below.
+
+- - -
+### API Object Structure
+* `name`: The FQDN of the API as described in the provided config.
+* `syntax`: `SYNTAX_PROTO2` or `SYNTAX_PROTO3`.
+* `version`: A version string for this api. If specified, will have the form major-version.minor-version, e.g. `1.10`.
+* `methods`: A list of Method objects; structure is documented below.
+
+### Method Object Structure
+* `name`: The simple name of this method as described in the provided config.
+* `syntax`: `SYNTAX_PROTO2` or `SYNTAX_PROTO3`.
+* `request_type`: The type URL for the request to this API.
+* `response_type`: The type URL for the response from this API.
+
+### Endpoint Object Structure
+* `name`: The simple name of the endpoint as described in the config.
+* `address`: The FQDN of the endpoint as described in the config.

google.erb

@@ -396,6 +396,15 @@
     </ul>
     </li>
 
+    <li<%= sidebar_current("docs-google-endpoints") %>>
+    <a href="#">Google Endpoints Resources</a>
+    <ul class="nav nav-visible">
+      <li<%= sidebar_current("docs-google-endpoints-service") %>>
+          <a href="/docs/providers/google/r/endpoints_service.html">google_endpoints_service</a>
+      </li>
+    </ul>
+    </li>
+
     <li<%= sidebar_current("docs-google-pubsub") %>>
     <a href="#">Google PubSub Resources</a>
     <ul class="nav nav-visible">