[PATCH] REST: Allow update of bundle without patches

[Stephen Finucane]

On Fri, 2020-04-17 at 23:15 +0100, Stephen Finucane wrote:
> Presently, when updating a patch we assume that patches are provided.
> This isn't necessary - you might just want to make it public - and isn't
> enforced by the API itself. However, because we make this assumption, we
> see a HTTP 500. Resolve the issue and add tests to prevent a regression.
> 
> Signed-off-by: Stephen Finucane <stephen at that.guru>
> Resolves: #357

I've applied this to master. Will backport to stable/2.2 shortly, once
I've finished reviewing the other open patches.

Stephen