Code review comment for ~emitorino/ubuntu-cve-tracker:detect_priority_mismatch

> One thing we talked about was adding tags that could either be indicators for
> the priority assessing role, or could be expanded into the explanation itself.
> A really simple sample of the data store for this could look something like:
>
> diff --git a/meta_lists/priority_explanations.yaml
> b/meta_lists/priority_explanations.yaml
> new file mode 100644
> index 00000000000..868d5011dca
> --- /dev/null
> +++ b/meta_lists/priority_explanations.yaml
> @@ -0,0 +1,7 @@
> +# standardized priority reason text
> +# tag/keyword based, so that we can add the tags as part of triage and
> +# re-triage to make it easier to generate.
> +---
> +kernel-debugfs: |
> + Exploitation requires write access to debugfs entries, which are
> + restricted to root by default on Ubuntu kernels.

Added in https://git.launchpad.net/~emitorino/ubuntu-cve-tracker/commit/?id=8c994d7350484b43b72b876a84764548185a00db

I also added:

1) the capability to filter CVEs published until a provided date https://git.launchpad.net/~emitorino/ubuntu-cve-tracker/commit/?id=0ada37ceebc83e7ad345e8a45f15bbd22e1082af. So this combined with --published-since can allow to filter by a range

2) The support for non-interactive (i.e. tmpfile) mode https://git.launchpad.net/~emitorino/ubuntu-cve-tracker/commit/?id=44f9c8be7a6aef70ce65bcec4caf46b35259469f