Deployment section of Getting Started guide is out of date

[jotaylo]

The deployment steps don't give any guidance on how to generate the client_id code for the config file.

I was able to get a deployment set up in release 6.3.0 by adding the --auto_create_cli_app flag to the deploy.py arguments, but with the refactoring for the config file for 6.4.0 the same command fails with:
"Exception: CLI client_id not provided as valid key. Please Provide Valid Config."

AB#36144

[AdamL-Microsoft]

The documentation might need to be updated to clear up confusion on this, but I think that the behavior you see here is unexpected, and this is actually a bug in the config refactoring.

The intention is that you should be able to start a new deploy while passing the --auto_create_cli_app flag while using a config file that doesn't already have the not-yet-created CLI app ID key + value.