[atlas] Format change for index pages of RIS MRT data files and RIPE Atlas daily dataset dumps

Dear RIS and RIPE Atlas users,

On Wednesday, 30 November 2022 we are planning to migrate the web server 
at <https://data.ris.ripe.net/> as well as <https://data-store.ripe.net> 
from Apache httpd to nginx.

This will affect how the file listings in HTML index pages are 
generated, including the following:
* RIS MRT data files (updates and dumps)
* RIPE Atlas daily dataset dumps

If you rely on the format of these pages, you need to update your 
software. Before we do the upgrade, you could check the new format of 
the index pages at:

  https://test-data.ris.ripe.net/rrc00/

We would like to ask you to avoid relying on the specific format of the 
index.html files.

If you are fetching BGP dump files, please use the REST API that is 
described at:

  https://ris.ripe.net/docs/40_Prototypes/15_per_rrc_dumps.html

You might also consider using per-peer dump files instead:

  https://ris.ripe.net/docs/40_Prototypes/10_per_peer_dumps.html

We want to encourage you to provide your feedback on the API, so that we 
could improve it and build a similar API for the update files.

If you are fetching update files, please use direct URLs to files as 
described at:

  https://ris.ripe.net/docs/20_raw_data_mrt.html#name-and-location


Kind regards,

Oleg Muravskiy, Robert Kisteleki
RIPE NCC