v3: Propagate --kube-context, --kubeconfig and --namespace values to plugins
v3: Propagate --kube-context, --kubeconfig and --namespace values to plugins

Closes #6631

Signed-off-by: Yusuke Kuoka <ce4fb244530503667b572703d30221f925521433@gmail.com>

adamreese/deployment-manager,adamreese/deployment-manager,michelleN/deployment-manager,adamreese/deployment-manager,bacongobbler/helm,michelleN/deployment-manager,michelleN/deployment-manager,helm/helm,adamreese/helm,adamreese/deployment-manager,adamreese/deployment-manager,adamreese/helm,michelleN/deployment-manager,helm/helm,bacongobbler/helm