Create update repositories for the beta release

[vidrep]

On the Haiku Project page, under articles "Updating your system" it says:

"To update your system to packages in the repositories above..."

However, the "repositories above" which previously showed the path(s) to the various builds are now missing from the page, and the path(s) in the default repo list do not point the pkgman update command to the correct path(s).

[vidrep]

The default url(s) for a fresh install of Haiku hrev48530 is as follows:

Haiku base-url: ​http://packages.haiku-os.org/haiku/master/x86_gcc2/r1~alpha4_pm_hrev48530

HaikuPorts base-url: ​http://packages.haiku-os.org/haikuports/master/repo/x86_gcc2/62b2370269331a590c3b9b35fe77501460fab92dd09c7c196bd0ede12f580b45

Why isn't the package manager update url(s) pointing to the current directories, so that we no longer need to find and enter them manually later?

[waddlesplash]

Having the update URLs point to the current directories would be nice, I agree. I can't recall if Ingo & Oliver had any reason against it other than "automatic updating isn't implemented" (which is now not true).

Changing the package repos' definitions in the build system is easy, but we need an OK from Oliver or Ingo before doing so.

[diver]

Removed "above" from ​https://www.haiku-os.org/guides/daily-tasks/updating-system

[pulkomandy]

The reason for not having "current" used in the nightlies is that we don't want them to auto-update. It is important that nightlies provide a fixed set of packages for a given hrev for testing of regressions (so you can say running hrevxxxx, package y works/does not work).

For the beta release there will be a specific URL setup (not "current") where you will get updates from the beta branch of Haiku, and packages that have been tested compatible with the release.

The URLs in the article look correct (packages.haiku-os.org redirects to download.haiku-os.org).

I'm keeping the ticket open as a task so we don't forget to set this up for the beta release, but there will be no fix for the nightlies.

[pulkomandy]

(In #12278) Except there is already a ticket for that :)