PMM-15228 Enrich AuthServer with performance metrics

[maxkondr]

https://jira.percona.com/browse/PMM-15228

percona/pmm#5670

[JNKPercona]

Server docker: perconalab/pmm-server-fb:PR-4484-872c790
Client docker: perconalab/pmm-client-fb:PR-4484-872c790
Watchtower docker: perconalab/pmm-watchtower-fb:PR-4484-872c790
Client tarball: https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4484-872c790.tar.gz
Staging instance: https://pmm.cd.percona.com/job/pmm3-aws-staging-start/parambuild/?DOCKER_VERSION=perconalab/pmm-server-fb:PR-4484-872c790&CLIENT_VERSION=https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4484-872c790.tar.gz

[JNKPercona]

API tests have succeded: https://pmm.cd.percona.com/job/pmm3-api-tests/6798/

[JNKPercona]

Server docker: perconalab/pmm-server-fb:PR-4484-b485c10
Client docker: perconalab/pmm-client-fb:PR-4484-b485c10
Watchtower docker: perconalab/pmm-watchtower-fb:PR-4484-b485c10
Client tarball: https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4484-b485c10.tar.gz
Staging instance: https://pmm.cd.percona.com/job/pmm3-aws-staging-start/parambuild/?DOCKER_VERSION=perconalab/pmm-server-fb:PR-4484-b485c10&CLIENT_VERSION=https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4484-b485c10.tar.gz

[JNKPercona]

API tests have succeded: https://pmm.cd.percona.com/job/pmm3-api-tests/6829/

[JNKPercona]

Server docker: perconalab/pmm-server-fb:PR-4484-a7c5b42
Client docker: perconalab/pmm-client-fb:PR-4484-a7c5b42
Watchtower docker: perconalab/pmm-watchtower-fb:PR-4484-a7c5b42
Client tarball: https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4484-a7c5b42.tar.gz
Staging instance: https://pmm.cd.percona.com/job/pmm3-aws-staging-start/parambuild/?DOCKER_VERSION=perconalab/pmm-server-fb:PR-4484-a7c5b42&CLIENT_VERSION=https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4484-a7c5b42.tar.gz

[JNKPercona]

API tests have succeded: https://pmm.cd.percona.com/job/pmm3-api-tests/6927/