PMM-14980-fix-readiness-probe

[ademidoff]

https://jira.percona.com/browse/PMM-14980

• PMM-14980 Fix the healthcheck percona/pmm#5227

[JNKPercona]

Server docker: perconalab/pmm-server-fb:PR-4296-02ebd33
Client docker: perconalab/pmm-client-fb:PR-4296-02ebd33
Watchtower docker: perconalab/pmm-watchtower-fb:PR-4296-02ebd33
Client tarball: https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4296-02ebd33.tar.gz
Staging instance: https://pmm.cd.percona.com/job/pmm3-aws-staging-start/parambuild/?DOCKER_VERSION=perconalab/pmm-server-fb:PR-4296-02ebd33&CLIENT_VERSION=https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4296-02ebd33.tar.gz

[JNKPercona]

API tests have succeded: https://pmm.cd.percona.com/job/pmm3-api-tests/5763/

[JNKPercona]

Server docker: perconalab/pmm-server-fb:PR-4296-439df5f
Client docker: perconalab/pmm-client-fb:PR-4296-439df5f
Watchtower docker: perconalab/pmm-watchtower-fb:PR-4296-439df5f
Client tarball: https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4296-439df5f.tar.gz
Staging instance: https://pmm.cd.percona.com/job/pmm3-aws-staging-start/parambuild/?DOCKER_VERSION=perconalab/pmm-server-fb:PR-4296-439df5f&CLIENT_VERSION=https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4296-439df5f.tar.gz

[JNKPercona]

API tests have succeded: https://pmm.cd.percona.com/job/pmm3-api-tests/5764/

[JNKPercona]

Server docker: perconalab/pmm-server-fb:PR-4296-6e8196a
Client docker: perconalab/pmm-client-fb:PR-4296-6e8196a
Watchtower docker: perconalab/pmm-watchtower-fb:PR-4296-6e8196a
Client tarball: https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4296-6e8196a.tar.gz
Staging instance: https://pmm.cd.percona.com/job/pmm3-aws-staging-start/parambuild/?DOCKER_VERSION=perconalab/pmm-server-fb:PR-4296-6e8196a&CLIENT_VERSION=https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4296-6e8196a.tar.gz

[JNKPercona]

API tests have succeeded: https://pmm.cd.percona.com/job/pmm3-api-tests/5766/