lauch pipeline should have an option to output yaml as well as Json

[mahesh-panchal]

Is your feature request related to a problem? Please describe.
Using the launch button on a webpage takes us to a site to fill in the parameters necessary for running a pipeline, and presents it in Json format for offline.

Describe the solution you'd like
It would be nice if the output format also supported YAML too, which would allow commenting on the user side later.