Ability to set number of replicas for rolling deploy

[braunsonm]

Stratos Version

4.3.0

Frontend Deployment type

• [ ] Cloud Foundry Application (cf push)
• [x] Kubernetes, using a helm chart
• [ ] Docker, single container deploying all components
• [ ] npm run start
• [ ] Other (please specify below)

Backend (Jet Stream) Deployment type

• [ ] Cloud Foundry Application (cf push)
• [x] Kubernetes, using a helm chart
• [ ] Docker, single container deploying all components
• [ ] Other (please specify below)

Expected behaviour

Stratos should be able to have a configuration update helm upgrade ... without downtime. This would involve configuring rolling deploys and allowing more than 1 replica.

Actual behaviour

Stratos will go offline and be unreachable if you helm upgrade ...

Steps to reproduce the behavior

1. Deploy Stratos using Helm
2. Update the Stratos config with helm upgrade ... Notice Stratos goes offline