PMM-12575 change api for agents

[BupycHuk]

PMM-12575

Link to the Feature Build: SUBMODULES-0

If this PR adds or removes or alters one or more API endpoints, please review and add or update the relevant API documents as well:

• [ ] API Docs updated

If this PR is related to some other PRs in this or other repositories, please provide links to those PRs:

• Links to related pull requests (optional).

[codecov[bot]]

Codecov Report

:x: Patch coverage is 72.72727% with 366 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 46.78%. Comparing base (3d14106) to head (7673ab6). :warning: Report is 22 commits behind head on v3.

Files with missing lines	Patch %	Lines
...mmands/inventory/change_agent_postgres_exporter.go	70.00%	20 Missing and 10 partials :warning:
.../inventory/change_agent_qan_mysql_slowlog_agent.go	69.38%	20 Missing and 10 partials :warning:
...commands/inventory/change_agent_valkey_exporter.go	69.38%	20 Missing and 10 partials :warning:
...commands/inventory/change_agent_mysqld_exporter.go	71.28%	18 Missing and 11 partials :warning:
...ventory/change_agent_qan_mysql_perfschema_agent.go	70.52%	19 Missing and 9 partials :warning:
.../change_agent_qan_postgresql_pgstatements_agent.go	68.53%	19 Missing and 9 partials :warning:
...change_agent_qan_postgresql_pgstatmonitor_agent.go	70.52%	19 Missing and 9 partials :warning:
...ommands/inventory/change_agent_mongodb_exporter.go	79.09%	15 Missing and 8 partials :warning:
...ventory/change_agent_qan_mongodb_profiler_agent.go	77.38%	13 Missing and 6 partials :warning:
.../commands/inventory/add_agent_postgres_exporter.go	0.00%	13 Missing :warning:
... and 43 more

Additional details and impacted files

@@            Coverage Diff             @@
##               v3    #4066      +/-   ##
==========================================
+ Coverage   44.56%   46.78%   +2.21%     
==========================================
  Files         363      380      +17     
  Lines       45706    39194    -6512     
==========================================
- Hits        20369    18337    -2032     
+ Misses      23677    19119    -4558     
- Partials     1660     1738      +78     

Flag	Coverage Δ
admin	34.59% <72.72%> (+17.26%)	:arrow_up:
agent	53.60% <ø> (+0.29%)	:arrow_up:
managed	46.27% <ø> (+1.74%)	:arrow_up:
vmproxy	72.09% <ø> (-2.05%)	:arrow_down:

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

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

:rocket: New features to boost your workflow:

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

[CLAassistant]

All committers have signed the CLA.