Vela Schedules - Add ability to pass parameters to a scheduled build

[KenBakerTGT]

Description

Provide ability to specify parameters for a scheduled build. Think of it like an overide to an environment variable.
We have jobs that take command line parameters. Those parameters will have a default value, but on occasion on-demand run will be needed with altered parameters.
Instead of updating the job/script itself, would be preferred to trigger the schedule as a one-time run and provide the parameters as overrides.

Value

More flexible and reusable code.

Definition of Done

Ability to request on-demand/one-time executions with custom parameters.

Effort (Optional)

Impacted Personas (Optional)

[JordanSussman]

Have you taken a look at using Deployments to handle this?