APPLIED: [focal] various DKMS fixes

[Seth Forshee]

On Wed, Jan 29, 2020 at 09:14:08PM +0000, Andy Whitcroft wrote:
> We have a few outstanding linux/linux-restricted modules DKMS related
> issues.
> 
> 1) the fixes to use the librarian are incomplete for ports architectures
> which are firewalled from the librarian on https.  Fix this by
> introducing a new file-downloader helper which converts these URLs to
> http which are permitted,
> 
> 2) The Nvidia modules need to have versioned provides to allow them to
> replace the relevant dkms packages,
> 
> 3) Introduces signed wireguard modules.  This is included in this series
> as it is dependant on the versioned provides support above.
> 
> There is a cranky-fix update coming which will help propogate the
> necessary packaging changes to derivatices.
> 
> These are presented as two pull requests, the first for focal:linux-5.4
> and the second for focal:linux-restricted-modulees-5.4.
> 
> Proposing for focal for fuller testing.

Applied, thanks!