Verify that piece-indexer is adding PieceCID->PayloadCID mappings for Curio SPs

[bajtos]

Improve piece-indexer to check if the advertisement's ContextID is formatted in the new way described in filecoin-project/FIPs#1089. If it is, extract PieceCID from there.

• Change the data in our production Redis instance and delete the ingestion status for provider peer ID 12D3KooWJ91c6xQshrNe7QAXPFAaeRrHWq2UrgXGPf8UmMZMwyZ5 to trigger re-scan of all advertisements. (This provider is running Curio, see Support http-path in index provider address #117).
• Wait until we process enough advertisements. You can check progress here: https://pix.filspark.com/ingestion-status/12D3KooWJ91c6xQshrNe7QAXPFAaeRrHWq2UrgXGPf8UmMZMwyZ5
• Verify that piece-indexer could extract PieceCID->PayloadCID mappings from the advertisements, e.g. by inspecting piecesIndexed in the ingestion-status response.

[bajtos]

Nice to do after we verify the new solution works as intended:

Write a one-time script to iterate over all walker-state:* entries. For each entry, parse the value as JSON and inspect the value of addsMissingPieceCID. If it's non-zero, then delete the entry to trigger a full re-scan of all advertisements from this provider.

This will populate the Piece->Payload index for older deals that were created in the past, before we deployed the patch.

[NikolasHaimerl]

Piece indexer successfully walked the advertisement chain for the id 12D3KooWJ91c6xQshrNe7QAXPFAaeRrHWq2UrgXGPf8UmMZMwyZ5:

27.0.0.1:16379> GET walker-state:12D3KooWJ91c6xQshrNe7QAXPFAaeRrHWq2UrgXGPf8UmMZMwyZ5
"{\"head\":\"baguqeerabqqerhrmj3cknac7rmecl3eoirchplx7k44dc3jeayqbnwl5co7a\",\"tail\":\"baguqeera3vs4sxnjvdglzbmhia5hjfisanmwy7bbimlv5gxupkbpfuwp2kjq\",\"status\":\"Walking the advertisements from baguqeerabqqerhrmj3cknac7rmecl3eoirchplx7k44dc3jeayqbnwl5co7a, next step: baguqeera3vs4sxnjvdglzbmhia5hjfisanmwy7bbimlv5gxupkbpfuwp2kjq\"}"

[NikolasHaimerl]

Nice to do after we verify the new solution works as intended:

Write a one-time script to iterate over all walker-state:* entries. For each entry, parse the value as JSON and inspect the value of addsMissingPieceCID. If it's non-zero, then delete the entry to trigger a full re-scan of all advertisements from this provider.

This will populate the Piece->Payload index for older deals that were created in the past, before we deployed the patch.

Done!