Description:
    Create or update ManageIQ provider plugin

Example:
    rails generate manageiq:provider ManageIQ::Providers::VendorName --manager-type=cloud
    rails generate manageiq:provider ManageIQ::Providers::VendorName --manager-type=cloud --path ~/dev
    rails generate manageiq:provider ManageIQ::Providers::VendorName --manager-type=cloud --vcr
    rails generate manageiq:provider ManageIQ::Providers::VendorName --no-scaffolding
