Custom parameters under Pipeline

[Karthikeyanraman94]

Ability to add custom parameters in pipeline level and passing it in while calling modules, would make the dinghy codes cleaner

Example:

pipelines:

• name: dev
  application: keyan
  vars:
  xyzzy: hszs
  dodge: adgdg
  stages:
  {{ module "stage.createNamespace.module" "env" "dev"}}