Support "Federation Metadata" for ADFS connection

[SimonG-Kontentai]

Checklist

• I agree to the terms within the Auth0 Code of Conduct.

Describe the problem you'd like to have solved

auth_connection for ADFS connection only supports using adfs_server, but Auth0 has a second option -> using Federation Metadata

Describe the ideal solution

Option to use the Federation Metadata file instead of adfs_server.

Alternatives and current workarounds

Maybe I could use "metadata_xml", but if I define a value for this property, I get "Error: 400 Bad Request: missing federation metadata url"

metadata_url (String) The URL of the SAML metadata document.
metadata_xml (String) The XML content for the SAML metadata document.

Additional context

https://community.auth0.com/t/create-adfs-connection-with-federation-metadata-file-using-auth0-terraform-provider/90055/1

[sergiught]

Hey @SimonG-Kontentai 👋🏻 this is now available in the latest release. https://github.com/auth0/terraform-provider-auth0/releases/tag/v0.43.0 You can now use the fed_metadata_xml option to set the metadata directly for adfs connections.