num_repeats only sends command once for roku remote

[trancefam]

The problem

I am trying to send the volume_down command multiple times using the num_repeats option of remote. When I run the script, it only presses the volume down button once. remote.bedroom_tv is a roku tv added using the roku integration.

Environment

• Home Assistant Core release with the issue: 0.109.0
• Last working Home Assistant Core release (if known): not known
• Operating environment (Home Assistant/Supervised/Docker/venv): venv
• Integration causing this issue: roku and/or remote
• Link to integration documentation on our website: https://www.home-assistant.io/integrations/roku and https://www.home-assistant.io/integrations/remote

Problem-relevant configuration.yaml

- service: remote.send_command
      data:
        entity_id: remote.bedroom_tv
        command: volume_down
        num_repeats: 40

Traceback/Error logs

2020-04-30 02:47:54 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.139635338688144] Received {'type': 'call_service', 'domain': 'remote', 'service': 'send_command', 'service_data': {'entity_id': 'remote.bedroom_tv', 'command': 'volume_down', 'num_repeats': 40}, 'id': 22}
2020-04-30 02:47:54 DEBUG (MainThread) [homeassistant.core] Bus:Handling <Event call_service[L]: domain=remote, service=send_command, service_data=entity_id=remote.bedroom_tv, command=volume_down, num_repeats=40>
2020-04-30 02:47:54 DEBUG (SyncWorker_1) [roku] /keypress/VolumeDown
2020-04-30 02:47:54 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.139635338688144] Sending {'id': 22, 'type': 'result', 'success': True, 'result': {'context': Context(user_id='2d96a9063fed423ead05199edcae42d3', parent_id=None, id='098f73f94b864ffb851393e4acb6e139')}}

Additional information

Multiple commands do work if they are sent like this:

- service: remote.send_command
      data:
        entity_id: remote.bedroom_tv
        command: 
          - right
          - right
          - right
          - right
          - right
          - right
          - right

However, I'd like to avoid 40 lines doing the same thing

[probot-home-assistant]

Hey there @ctalkington, mind taking a look at this issue as its been labeled with a integration (roku) you are listed as a codeowner for? Thanks!
_{^{(message by CodeOwnersMention)}}

[ctalkington]

I dont believe that num_repeats was in the initial remote addition. The remote platform in general isnt as well documented for devs so your likely to find that parts are missing here and there for any remote platform.

That said ill take a look