Ignores 'disabled' flag in functions.json

[fiveisprime]

Taken from microsoft/vscode-node-azure-pack#8

When debugging/executing in local environment, the disabled flag value in functions.json is ignored: All functions are started regardless of if they're disabled or not.

[ejizba]

The disabled flag was only used in v1. You have to set an app setting like this if you want to disable a function in v2:

AzureWebJobs.<function name>.Disabled

See https://docs.microsoft.com/en-us/azure/azure-functions/disable-function