Gateway UI assumes openfaas-fn is the default namespace

[LucasRoesler]

My actions before raising this issue

• Followed the troubleshooting guide
• Read/searched the docs
• Searched past issues

If I deploy openfaas and set the default function namespace to something that is not openfass-fn the gateway UI will not be able to deploy any functions. it returns an error

unable create Deployment: namespaces "openfaas-fn" not found

This error is correct, but not expected.

Expected Behaviour

The UI should request the list of namespaces and use the first one in the list as the default.

This of course requires that the api return the configured default as the first value

Current Behaviour

The ui can not deploy functions unless you explicitly deploy with the openfaas-fn namespace.

Steps to Reproduce (for bugs)

1. Deploy on kubernetes with the latest helm chart openfaas-5.3.8 but set namespace=not-default-openfaas and functionNamespace=not-default-openfaas-fn
2. Open the gateway ui
3. Try to deploy NodeInfo

Context

Your Environment

• Are you using Docker Swarm or Kubernetes (FaaS-netes)?
  faas-netes

• Operating System and version (e.g. Linux, Windows, MacOS):
  osx

[Waterdrips]

/assign: me

[alexellis]

Ref: openfaas/faas-netes#511

[Waterdrips]

The UI should request the list of namespaces and use the first one in the list as the default.

@LucasRoesler and @alexellis do we think this is ok? the backend isnt returning my "default" namespace first?

[LucasRoesler]

@Waterdrips i think we can update he providers to always put the default namespace first

[Waterdrips]

/close

this should have been closed by #1409 but i put the same issue (#1408 ) in the close section twice