PMM-8082 add srv initialization

[denisok]

PMM-8082

Build: SUBMODULES-2534

• [ ] https://github.com/Percona-Lab/pmm-submodules/pull/2534
• [ ] https://github.com/percona/pmm-update/pull/215
• [ ] https://github.com/percona/pmm-server/pull/364

[codecov[bot]]

Codecov Report

Merging #1148 (b8108b9) into main (1011fab) will increase coverage by 0.01%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #1148      +/-   ##
==========================================
+ Coverage   48.98%   48.99%   +0.01%     
==========================================
  Files         182      182              
  Lines       21323    21325       +2     
==========================================
+ Hits        10445    10449       +4     
+ Misses       9723     9721       -2     
  Partials     1155     1155              

Flag	Coverage Δ
all	48.65% <100.00%> (+0.01%)	:arrow_up:
cover	49.16% <100.00%> (+0.01%)	:arrow_up:
crosscover	48.99% <100.00%> (+0.01%)	:arrow_up:
update	12.84% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
utils/envvars/parser.go	74.64% <100.00%> (+1.79%)	:arrow_up:

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