enable exhaustruct linter

[kozyrev-m]

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Pull request type

Please check the type of change your PR introduces:

• [ ] Bugfix
• [ ] Feature
• [x] Code style update (formatting, renaming)
• [x] Refactoring (no functional changes, no api changes)
• [x] Build related changes
• [ ] Documentation content changes
• [ ] Other (please describe):

What is the current behavior?

Issue Number: #931

What is the new behavior?

Other information

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 75.86207% with 14 lines in your changes are missing coverage. Please review.

Project coverage is 54.64%. Comparing base (72c8364) to head (db2ee7f).

Files	Patch %	Lines
internal/allocator/allocator.go	44.00%	14 Missing :warning:

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #1034       +/-   ##
===========================================
- Coverage   66.64%   54.64%   -12.00%     
===========================================
  Files         283      280        -3     
  Lines       27583    26506     -1077     
===========================================
- Hits        18382    14484     -3898     
- Misses       8342    11030     +2688     
- Partials      859      992      +133     

Flag	Coverage Δ
	54.64% <75.86%> (+0.11%)	:arrow_up:
go-1.21.x	54.51% <75.86%> (-13.94%)	:arrow_down:
go-1.22.x	54.54% <75.86%> (-11.99%)	:arrow_down:
integration	54.64% <75.86%> (+0.11%)	:arrow_up:
macOS	?
ubuntu	?
unit	?
windows	?
ydb-22.5	52.49% <75.86%> (+0.02%)	:arrow_up:
ydb-23.1	52.41% <75.86%> (+0.14%)	:arrow_up:
ydb-23.2	52.33% <75.86%> (-0.17%)	:arrow_down:
ydb-23.3	52.38% <75.86%> (-0.15%)	:arrow_down:
ydb-24.1	54.48% <75.86%> (+0.12%)	:arrow_up:

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