Misnamed functions fail silently

[BlakeMScurr]

Specifically, if I write a workflow that uses a fission function with a dash - in it, such as:

apiVersion: 1
output: Hello
tasks:
  InternalFuncKickOff:
    run: noop

  Hello:
    run: hello-go
    inputs: "{$.Invocation.Inputs.default}"
    requires:
    - InternalFuncKickOff

then testing that workflow will hang, and the workflow pod in the fission-function namespace will indefinitely log:

time="2018-05-10T23:25:43Z" level=error msg="Workflow is not ready yet." wf.status=PENDING

the hello-go function works fine on its own.

It would be nice to get an immediate error when deploying these workflows malformed, or at least when running them.

Versions: Workflows: 0.2.0 Fission: 0.6.0 Kubernetes:1.10.2