Support Routing Mode in net-swp module

[a200462790]

Describe the bug
A new field(routing_mode) has been rolled out in the network services gateway terraform resource:
https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/network_services_gateway#routing_mode

This is a feature request to add it to the net-swp module.

[juliocc]

According to your link, this field has only one allowed value SECURE_WEB_GATEWAY. Is this right?

[a200462790]

The routing mode only has one allowed value(NEXT_HOP_ROUTING_MODE), although strangely I think the API allows 2(EXPLICIT_ROUTING_MODE).
https://cloud.google.com/secure-web-proxy/docs/deploy-next-hop

If not specified it defaults to EXPLICIT. Though, im not sure the provider supports specifying EXPLICIT

[ludoo]

Closing this, feel free to reopen once/if provider support is implemented.

[a200462790]

@ludoo the provider does support

1. Not setting the routing mode(which gets defaulted to EXPLICIT_ROUTING_MODE)
2. setting the routing mode to NEXT_HOP_ROUTING_MODE

The fabric module does not support 2. Id like to re-open to add support for 2.