Fixed infinitely recursive health checks

[excitoon]

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Description of change

Fixed infinite recursion in health checks (once and for all).

Fixes #2866
Really fixes #2563

[excitoon]

@petyaslavova please review

[petyaslavova]

@petyaslavova please review

Hi @excitoon thank you for your contribution! We’ll review your change soon.

[excitoon]

Hi Petya, how's your weekend going? 🍻

[excitoon]

[petyaslavova]

@excitoon Tomorrow is the day for this PR review :)

[petyaslavova]

The change looks good to me. With it instead of the max recursion depth reached error, an "redis.exceptions.ConnectionError: max number of clients reached" is raised.
@vladvildanov would this change affect the fix you are working on lately?

[vladvildanov]

@petyaslavova Not really, LGTM

[excitoon]

@petyaslavova Thanks alot!