message: Change clientId to clientIdentifier
  A point of clarity, client identifier is a better term for a value
  that can range from UUID, abritray strings, certs, and really
  anything else. Client Id was leading to confusion about the generation
  state and possible values (i.e. id's are typically a monotype)
diff: @@ -40,9 +40,9 @@ export default class RegisterQueries extends Command {
  "Automatically remove @client and @connection directives and fields from operations"
  }),
  // XXX abstract for "clientFlags" and add to config
  - clientId: flags.string({
  + clientIdentifier: flags.string({
  description:
  - "Id for the client which will match ids from client traces, will use clientName if not provided"
  + "Identifier for the client which will match ids from client traces, will use clientName if not provided"
  }),
  clientName: flags.string({
  required: true,
  @@ -111,7 +111,7 @@ export default class RegisterQueries extends Command {
  const variables = {
  clientIdentity: {
  clientName: flags.clientName,
  - clientId: flags.clientId || flags.clientName,
  + clientIdentifier: flags.clientIdentifier || flags.clientName,
  clientVersion: flags.clientVersion
  },
  serviceId: getIdFromKey(ctx.currentSchema.engineKey),
  