make limiting features consistent across Gateway-MT and Link Sharing Service

[amwolff]

Goal

Gateway-MT has the per-macaroon head rate limiter and linksharing has a limit on the total number of requests as well as the ability to block certain paths. It would be valuable to make these options consistent.

Acceptance Criteria

• Implement the limit on the total number of requests in GW-MT
• Implement the per-macaroon head rate limiter in linksharing
• Make the per-macaroon head rate limiter have the ability to rate limit project IDs as well
• Make limiting options consistent under the same configuration key (e.g., --limits.[…])

Links

[storj-gerrit[bot]]

Change pkg/{minio,server/middleware}: use project for concurrent req limiter mentions this issue.

[storj-gerrit[bot]]

Change pkg/linksharing: add limiter middleware mentions this issue.

[storj-gerrit[bot]]

Change pkg/server: rename --concurrent-allowed mentions this issue.

[storj-gerrit[bot]]

Change pkg/linksharing/sharing: remove concurrent request limiter mentions this issue.

[halkyon]

This looks like it's done. There's some follow-up work I raised an issue for here: https://github.com/storj/edge/issues/569