fix #237 add install flag for using the v3 forge api

[jhaals]

librarian-puppet install --use-v3-api adds support for downloading modules from a custom
Puppet forge using the v3 api

[carlossg]

I'd rather have a --v1 for backwards compatibility because going forward it's all going to be v3 by default. And could you add the usage to the docs?

Thanks!

[jhaals]

That makes perfect sense @carlossg. I switched to --use-v1-api which is true by default. Should probably be switched to false in the next major release. So installig from a v3 forge will be --no--use-v1-api
Are you okay with the naming of the install flag? Do you want to documented under the How To Use section in the readme or someplace else?

[carlossg]

Thanks! name is fine, and all docs are in the readme.
Your custom forge is a Puppet Enterprise installation or something else?

[jhaals]

I'll write something up right away

The current custom forge I'm using is written in Go https://github.com/jhaals/go-puppet-forge
It's probably a matter of time before other hosted forges move over to v3. Puppet Enterprise has no hosted forge.

[carlossg]

thanks!