ATProto: backfill new DID doc changes into old DID docs

[mackuba]

"serviceEndpoint": "https://atproto.brid.gy/"

Just when you have time :)

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• add trailing slash to serviceEndpoint
• Put Bluesky DIDs and AP actor ids into alsoKnownAs in actor objects and DID docs #1331

[snarfed]

hah yes top priority 😎

[snarfed]

Generalizing this issue to include everything we want to backfill into existing DID docs. I'll add a checklist to the original description.

[snarfed]

Also huffduff-video.snarfed.org / did:plc:lgzdqdbziasi7l3amczptkjt , it has PDS fed.brid.gy. https://bsky.app/profile/suboptimal.technology/post/3l7pwumsr6x2n

[snarfed]

Here's repl code I used to update huffduff-video.snarfed.org just now:

from arroba import did
handle = 'huffduff-video.snarfed.org'
d = 'did:plc:lgzdqdbziasi7l3amczptkjt'
repo = arroba.server.storage.load_repo(d)
os.environ['PDS_HOST'] = 'atproto.brid.gy'
did.update_plc(did=d, signing_key=repo.signing_key, rotation_key=repo.rotation_key,
               get_fn=util.requests_get, post_fn=util.requests_post)