PMM-13971 Health check for qan-api2.

[JiriCtvrtka]

PMM-13971

FB: Percona-Lab/pmm-submodules#4091

[codecov]

Codecov Report

❌ Patch coverage is 11.11111% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 45.66%. Comparing base (b4799aa) to head (87c18fd).

Files with missing lines	Patch %	Lines
managed/services/qan/client.go	0.00%	6 Missing ⚠️
managed/cmd/pmm-managed/main.go	0.00%	1 Missing ⚠️
managed/services/server/server.go	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##               v3    #4710      +/-   ##
==========================================
- Coverage   45.67%   45.66%   -0.02%     
==========================================
  Files         363      363              
  Lines       37654    37662       +8     
==========================================
- Hits        17199    17198       -1     
- Misses      18796    18804       +8     
- Partials     1659     1660       +1     

Flag	Coverage Δ
admin	17.92% <ø> (ø)
agent	53.50% <ø> (ø)
managed	46.16% <11.11%> (-0.02%)	⬇️
vmproxy	72.09% <ø> (ø)

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

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.