This instruction makes user to install unauthenticated docker registry.

https://github.com/edgexfoundry-holding/orra/tree/main/demos/OH-EXF-Jakarta#publish

This would open the hosted docker registry for access without any authentication from outside and anyone having access to the host IP address can push, pull images. This is a serious security hole.

This needs to be fixed - either by making the docker registry Authenticated or remove this dependency.

Describe the bug
The SDO-OH-EXF-dev-simple README step four refers to commands starting with hzn voucher ... in the test-sdo.sh script. Those commands are now hzn sdo voucher ....

To Reproduce
Steps to reproduce the behavior:

1. Go to https://github.com/edgexfoundry-holding/orra/tree/main/demos/SDO-OH-EXF-dev-simple#step-four-edit-and-run-the-sdo-script
2. Scroll down to the second bullet point
3. See error

Expected behavior
The commands in the documentation should start hzn sdo voucher ...

Under demos, let's create a new folder named OH-EXF-Jakarta with support for deploying the Jakarta release of EdgeX Foundry in Open Horizon. This will only use the specific services needed for a specific retail use case. It will include support for an ONVIF device and DL Streamer service.

Also, Docker image names have been updated. See: https://edgexfoundry.slack.com/archives/CE4MHUBTM/p1620834026159900?thread_ts=1620833969.159600&cid=CE4MHUBTM

Add code, configuration, instructions so that developers can replicate this example on a comparable VM. The VM should be able to run with 1 vCPU, 4GB RAM, 20 GB storage and Ubuntu 18.04 or 20.04. It should demonstrate delivery of EdgeX Foundry and a Device Service by Open Horizon after using SDO to deliver the Open Horizon Agent.

The example demo-ui my team has been working on requires the use of mqtt over websockets in order to connect to the mqtt broker and get the inference events.

This will require a few things:

1. Add a custom mosquitto.conf file to deploy-data
   1. Add the websocket support:

       listener 9001
       protocol websockets
      

2. Add volume mappings for mosquitto.conf
3. Add port mappings for added port (ex. port 9001)

Following the current trend in the industry of moving away from using racially charged terms we ought to make the default branch 'main' instead of 'master.