[usability] the Cloud Secret Manager API surface requires empty object for replication

[bcoe]

With the Secret Manager API, unless I provide an empty automatic object to replication, like so:

    const secret = await client.createSecret({
      parent: 'projects/1111111',
      secret: {
        name: 'foo',
        replication: {
          automatic: {}
        }
      },
      secretId: 'foo'
    })

I receive:

INVALID_ARGUMENT: Secret.replication must be provided.

☝️ an empty object feels like a weird interpretation of the protos?

[xiaozhenliu-gg5]

From the proto file below, I see that for replication field, one of automatic or user_managed is required, so here I guess either we pass an empty object for automatic or define an object as user_managed, API will be happy. https://github.com/googleapis/googleapis/blob/master/google/cloud/secretmanager/v1/resources.proto#L122

This is something related to API proto file, I will close this if no more further questions :) @bcoe