Docs update for google_compute_global_address

[keisku]

Hi,

I got this error when terraform apply.

│ Error: Error creating GlobalAddress: googleapi: Error 400: Invalid value for field 'resource.purpose': 'VPC_PEERING'. The field cannot be specified with external address., invalid
│ 
│   with google_compute_global_address.static_ip["foo"],
│   on main.tf line 37, in resource "google_compute_global_address" "static_ip":
│   37: resource "google_compute_global_address" "static_ip" {
│ 

I think The field cannot be specified with external address. should be on the document to prevent this error before terraform apply.

[keisku]

@ScottSuarez Could you review it,please?

[ScottSuarez]

Looks like this documentation is outdated in general since we fork these values at release.

This allows you to match any allowed enumeration in the official api.. NAT_AUTO should allow external addresses. Sorry for the confusion here.

The purpose of this resource, which can be one of the following values:

GCE_ENDPOINT for addresses that are used by VM instances, alias IP ranges, load balancers, and similar resources.
DNS_RESOLVER for a DNS resolver address in a subnetwork for a Cloud DNS inbound forwarder IP addresses (regional internal IP address in a subnet of a VPC network)
VPC_PEERING for global internal IP addresses used for private services access allocated ranges.
NAT_AUTO for the regional external IP addresses used by Cloud NAT when allocating addresses using <a href="https://cloud.google.com/nat/docs/ports-and-addresses#addresses" automatic NAT IP address allocation.
IPSEC_INTERCONNECT for addresses created from a private IP range that are reserved for a VLAN attachment in an IPsec-encrypted Cloud Interconnect configuration. These addresses are regional resources. Not currently available publicly.
SHARED_LOADBALANCER_VIP for an internal IP address that is assigned to multiple internal forwarding rules.
PRIVATE_SERVICE_CONNECT for a private network address that is used to configure Private Service Connect. Only global internal addresses can use this purpose.

https://cloud.google.com/compute/docs/reference/rest/v1/globalAddresses

[keisku]

@ScottSuarez

Thanks for the review.
I edited it following the official document. e00d1be

[ScottSuarez]

I've upstreamed this to our code generator, so that pr will supersede this one. Thanks for the contribution! :)

GoogleCloudPlatform/magic-modules#5079

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