Add api-worker simcore service

[YuryHrytsuk]

What do these changes do?

Related issue/s

• closes Setup api-worker service on deployments #1192

Related PR/s

• ⚠️🎨✨ Execute the api-server's run and map function api endpoints in celery worker osparc-simcore#8233

• must be merged before 👉 configuration changes https://git.speag.com/oSparc/osparc-ops-deployment-configuration/-/merge_requests/1571

Checklist

• I tested and it works
• The Stack has been included in CI Workflow

New service

• Service has resource limits and reservations
• Service has placement constraints or is global
• Service is restartable
• Service restart is zero-downtime
• Service has >1 replicas in PROD
• Service has docker healthcheck enabled --> defined in docker image
• Service is monitored (via prometheus and grafana) --> tracing and prometheus metrics endpoint are not exposed on this service
• Service is not bound to one specific node (e.g. via files or volumes)
• Relevant OPS E2E Test are added --> no special e2e ops tests needed
• Grafana dashboards updated accordingly --> no special changes necessary

If exposed via traefik --> not applicable

• Service's Public URL is included in maintenance mode
• Service's Public URL is included in testing mode
• Service's has Traefik (Service Loadbalancer) Healthcheck enabled
• Credentials page is updated
• Url added to e2e test services (e2e test checking that URL can be accessed)

[YuryHrytsuk]

Blocked until @bisgaard-itis estimates CPU / Memory limits for api-worker

[bisgaard-itis]

Blocked until @bisgaard-itis estimates CPU / Memory limits for api-worker

Here are the findings from running locust tests with 20 users:

Let's agree to go with RAM: 500MB and CPU: 1.5.

[bisgaard-itis]

Thanks a lot for setting this up