fix: remove optional tag on input parameter (GoogleCloudPlatform#5148)

* fix: remove optional tag on input parameter

* nit: numbering in readme

Author: anguillanneuf

pubsublite/streaming-analytics/README.md

@@ -133,24 +133,24 @@ gcloud dataflow flex-template run "pubsublite-to-gcs-`date +%Y%m%d`" \
 
 1. Stop the pipeline. If you use `DirectRunner`, `Ctrl+C` to cancel. If you use `DataflowRunner`, [click](https://console.cloud.google.com/dataflow/jobs) on the job you want to stop, then choose "Cancel".
 
-1. Delete the Lite topic and subscription.
+2. Delete the Lite topic and subscription.
 ```sh
 gcloud pubsub lite-topics delete $TOPIC
 gcloud pubsub lite-subscription delete $SUBSCRIPTION
 ```
 
-1. Delete the Cloud Storage objects:
+3. Delete the Cloud Storage objects:
 ```sh
 gsutil -m rm -rf "gs://$BUCKET/samples/output*"
 ```
 
-1. Delete the template image in Cloud Registry and delete the Flex template if you have created them.
+4. Delete the template image in Cloud Registry and delete the Flex template if you have created them.
 ```sh
 gcloud container images delete $TEMPLATE_IMAGE
 gsutil rm $TEMPLATE_PATH
 ```
 
-1. Delete the Cloud Storage bucket:
+5. Delete the Cloud Storage bucket:
 ```sh
 gsutil rb "gs://$BUCKET"
 ```
@@ -162,4 +162,4 @@ gsutil rb "gs://$BUCKET"
 [Publish]: https://cloud.google.com/pubsub/lite/docs/publishing/
 [Pub/Sub Lite location]: https://cloud.google.com/pubsub/lite/docs/locations/
 [Dataflow region]: https://cloud.google.com/dataflow/docs/concepts/regional-endpoints/
-[Dataflow Flex template]: https://cloud.google.com/dataflow/docs/guides/templates/using-flex-templates
+[Dataflow Flex template]: https://cloud.google.com/dataflow/docs/guides/templates/using-flex-templates

pubsublite/streaming-analytics/metadata.json

@@ -19,10 +19,9 @@
       "name": "output",
       "label": "Filename prefix of output files including the file path",
       "helpText": "Filename prefix of output files including the file path, e.g. gs://my-bucket/my-filename-prefix.",
-      "isOptional": true,
       "regexes": [
         "^gs:\\/\\/.*$"
       ]
     }
   ]
-}
+}