Feature Request: Add ExecAction to config(map)

[kgunjikar]

As a part of injection for sidecars I want to be able to call a preStop hook , so we can cleanup before exit.

ConfigMap Change.

imagePullPolicy: IfNotPresent
lifecycle:
preStop:
exec: ["/bin/bash", "-c", "/opt/bin/prestop"]

E1104 19:09:48.504599 1 main.go:132] error reconciling configmaps: error getting ConfigMaps from API: error parsing ConfigMap sidecar-test item test1 into injection config: e rror unmarshaling JSON: json: cannot unmarshal array into Go struct field Handler.exec of type v1.ExecAction

I guess we will have to add to InjectionConfig structure

Version Deets

• Kubernetes Version: 1.15.3
• k8s-sidecar-injector Version: Top of Tree.