Post Release v1.87.0

[YuryHrytsuk]

Tasks

• maintenance pages: add ha setup ⚠️  #1251

• NIH PROD external maintenance: no docker services run on machine --> it is fixed
• External Maintenance Workflow
  • updating cpu reservations is missing --> it is not missing
  • updating cpu limits failed but playbook continued it successfully retried
  • docker image couldn't be pulled (out-of-date dockerhub credentials?) --> access token is updated.
  • docker engine is old. It needs an update --> done
  • add missing maintenace machine to NIH STAG --> this helps identifying problems earlier (in staging phase)
  • add test monitoring maintenance page state (e.g. docker access token)
  • increase disk size
  • test workflow on nih staging --> done in this CI Pipeline
• [NIH PROD] remove (old) warm / hot buffers running old docker engine version
• dalco prod: ops labels is only on first machine
• Traefik forwardauth middleware "silently" fails if wb-auth server is down / not reachable #1253

Originally posted by @YuryHrytsuk in #8432

[YuryHrytsuk]

All but one issues are resolved. For non-resolved problem a separated #1253 issue was created.