Refactor routine handler infrastructure

[korotkov-aerospike]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 35.71429% with 36 lines in your changes missing coverage. Please review.

Project coverage is 28.50%. Comparing base (a09a171) to head (5a74d65).

Files with missing lines	Patch %	Lines
pkg/service/cluster_config_writer.go	0.00%	20 Missing ⚠️
pkg/service/paths.go	48.38%	14 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##               v2     #251      +/-   ##
==========================================
+ Coverage   27.79%   28.50%   +0.71%     
==========================================
  Files          39       40       +1     
  Lines        2245     2273      +28     
==========================================
+ Hits          624      648      +24     
- Misses       1529     1533       +4     
  Partials       92       92              

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