Decide how to break up the remaining actix-web frontend conversion to async/await work

[fzzzy]

Remaining actix-web frontend calls

1

• get_collections
  • should be combined with finish_get_collection
• get_collection_counts
• get_collection_usage

2

• get_quota
• delete_all
• heartbeat
• test_error

3

• delete_collection
• post_collection
• post_collection_batch

4

• delete_bso
• get_bso
• put_bso

Remaining actix-web extractors

• BsoBodies::from_request
• BsoBody::from_request
• BsoPutRequest::from_request
• ConfigRequest::from_request
• HeartbeatRequest::from_request

Remaining actix-web middleware

• DbTransactionMiddleware::call
• PreConditionCheckMiddleware::call
• SentryWrapperMiddleware::call
• WeaveTimestampMiddleware::call

[fzzzy]

This is lower priority work as it will not change any behavior at runtime, just the way the code looks. We should probably do it some day but it's not super important at this time.

[fzzzy]

Created the following issues, breaking up the remaining work:

https://github.com/mozilla-services/syncstorage-rs/issues/540 https://github.com/mozilla-services/syncstorage-rs/issues/541 https://github.com/mozilla-services/syncstorage-rs/issues/542 https://github.com/mozilla-services/syncstorage-rs/issues/543 https://github.com/mozilla-services/syncstorage-rs/issues/544 https://github.com/mozilla-services/syncstorage-rs/issues/545