feat: remote graphite retries

[AleksandrMatsko]

Add retry logic for graphite remote

Use exponential backoff retry policy for graphite remote metric source. Retries is configured with special fields

graphite_remote:
  - cluster_id: 
     ...
     # for requests
     timeout: 60s
     # retries configuration for requests, that fetch data
     retries:
         # initial interval for retry attempt
         initial_interval: 60s        
         # used to calc interval between retries: RandomizedRetryInterval = RetryInterval * 
         # * (random value from range [1 - randomization_factor, 1 + randomization_factor]) 
         randomization_factor: 0.5
         # next RetryInterval = RetryInterval * multiplier
         multiplier: 1.5
         # caps RetryInterval (NOT RandomizedRetryInterval)
         max_interval: 120s
         # if already max_retries_count retries performed, stop retrying
         max_retries_count: 3
         # if time passed since first try is more than max_elapsed_time than stop retrying
         max_elapsed_time: 360s
     # for healthcheck requests
     heathcheck_timeout: 60s
     # retries configuration for healthcheck requests
     heathcheck_retries:
         # fields same for retries
         ...

Also added new error: ErrRemoteUnavailable to signal user about graphite unavailability.

[AleksandrMatsko]

/build

[github-actions]

Build and push Docker images with tag: feat-remote-graphite-retries.2024-10-22.2c87158

[kissken]

тут же ошибки произошло?

мб нэйминг подправить, просто глаз зацепился