[v2] when a connector is created in CLI using selector flag, a matching running pods must exist, or the command will timeout

[lynnemorrison]

If you specify a selector instead of a host, then the associated connector(s) will only be configured when that selector
resolves to one or more running pods. As an enhancement to the connector CLI command, I thought it would be useful
to lookup if the pods exist and if not then return a warning indicating the failure. Currently the code will wait for the
timeout and then report an error. This is really not an error, it is just there is currently no matching pod. If a pod is
added later the connector CRD is updated with a configured condition.