Error message if istioctl version doesn't match data plane version (#11592)
Error message if istioctl version doesn't match data plane version (#11592)

* Additional error text if istioctl version doesn't match data plane version

* Fix typo

* Revise wording of error msg

smawson/istio,istio/istio,geeknoid/istio,smawson/istio,geeknoid/istio,geeknoid/istio,istio/istio,istio/istio,istio/istio,geeknoid/istio,smawson/istio,geeknoid/istio,istio/istio,geeknoid/istio,smawson/istio,smawson/istio,smawson/istio