New GitHub label for release blockers

[Dr. Matthias St. Pierre]

Hi all,

taking up again the discussion from openssl-project where I suggested to (ab)use
the 3.0.0 milestone for release blockers, (see link and citation at the end of the mail),
I propose to add a new label for this purpose instead. In fact, I already created the label

	[urgent: release blocker]   (see link below)

and will add the mentioned tickets within shortly. So you can take a look and tell
me whether you like it or not. (If not, no problem. I'll just delete the label again.)

Matthias


BTW: It took me all my force of will to resist the temptation of making a pun
     by naming the label [urgent: beta blocker].


References:
==========

[urgent: release blocker]:
	https://github.com/openssl/openssl/labels/urgent%3A%20release%20blocker

[openssl-project message]:
	https://mta.openssl.org/pipermail/openssl-project/2020-September/002191.html


> > > For a more accurate and timely public overview over the current state of the blockers,
> > > it might be helpful to manage them via the 3.0.0  milestone
> > >
> > > https://github.com/openssl/openssl/milestone/15
> > >
> > > Some of the tickets listed below were already associated to the milestone, the others
> > > were added by me now.
> > 
> > I think the 3.0.0 milestone is what we expect to be in the
> > 3.0.0 release, not the beta release. That is bug fixes don't need
> > to be in the beta release, but if it adds new functionallity it
> > needs to be in the beta release.
> 
> I was aware of this subtlety but I thought that we just could (ab-)use the milestone for
> the beta1 release and reuse it later for the final release, instead of creating a new milestone.
> 
> Practically all of the relevant PRs are associated to the [3.0 New Core + FIPS] GitHub Project
> anyway, so it would be possible to remove the post-beta PRs from the milestone and restore
> them later.  (In my mind, I see project managers running away screeming...)
> 
> Matthias
> 
> 
> [3.0 New Core + FIPS]:  https://github.com/openssl/openssl/projects/2