Parametrize toleration and nodeSelector for Flow Jobs

[pestebogdan]

Is your request related to a problem? Please describe.
At the moment, we have to adapt the K8s environment labels and taints to accomodate the Flow installation due to the hardcoded values for tolerations and nodeSelector.

Describe the solution you'd like
Ability to declare tolerations and NodeSelector in the flow helm chart, so some templating needs to happen there but I believe it first needs to occur here: https://github.com/boomerang-io/flow.service.controller/blob/ceb52aac3ffa25f7fda7caf32995d1fc17b34b5f/src/main/java/net/boomerangplatform/kube/service/HelperKubeServiceImpl.java#L158-L166

Describe the benefits or justification for this request
Not conditioning platform owners with a specific value for taints/tolerations and labels for the nodes where the dedicvated flow jobs need to run.

[tlawrie]

Hi Bogdan. I have updated the helm chart to accept dynamic nodeSelector and Tolerations. These are then passed through to the tasks.

For example, on Google Cloud, it doesn't allow you to alter the Kubernetes node role so I have set that to a custom one in testing.

[tlawrie]

Need to complete documentation