Add timeouts and connection health checks to Redis connections

[carodewig]

Pulls in #7354 by @aembke.

Changes included in this PR:

• Update fred to 10.1.0
• Update fred configuration to improve client resiliency under various failure modes (TCP failures and timeouts, unresponsive sockets, Redis server failures, etc)
• Add heartbeats (sending PING every 10 sec) to each client in the pool
• Refactor client initialization
• Refactor client error and reconnection stream reading to not stop on RecvError::Lagged (which can happen reader end of the channel is too slow)

Note: this PR removes the timeout on wait_for_connect in RedisCacheStorage::create_client. The internal_command_timeout and unresponsive config fields should handle timeouts on connection creation, so hopefully that's not necessary.

Fixes #6855
Fixes #7354

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Checklist

Complete the checklist (and note appropriate exceptions) before the PR is marked ready-for-review.

• Changes are compatible¹
• Documentation² completed
• Performance impact assessed and acceptable
• Tests added and passing³
  • Unit Tests
  • Integration Tests
  • Manual Tests

Exceptions

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Notes

Footnotes

1. It may be appropriate to bring upcoming changes to the attention of other (impacted) groups. Please endeavour to do this before seeking PR approval. The mechanism for doing this will vary considerably, so use your judgement as to how and when to do this. ↩

2. Configuration is an important part of many changes. Where applicable please try to document configuration examples. ↩

3. Tick whichever testing boxes are applicable. If you are adding Manual Tests, please document the manual testing (extensively) in the Exceptions. ↩

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Build ID: 1f5dd3aafb87e48fa90c3348

[goto-bus-stop]

I hope I didn't miss anything 😇, but imo this looks great