Fix PR comments

- More strict on orchestrator flag
- Make orchestrator flag more explicit as experimental
- Add experimentalCLI annotation on kubernetes flags
- Better kubeconfig error message
- Prefix service name with stackname in ps and services stack subcommands
- Fix yaml documentation
- Fix code coverage ignoring generated code

Signed-off-by: Silvin Lubecki <silvin.lubecki@docker.com>

cli/command/cli.go

@@ -140,7 +140,6 @@ func (cli *DockerCli) Initialize(opts *cliflags.ClientOptions) error {
 	cli.clientInfo = ClientInfo{
 		DefaultVersion:  cli.client.ClientVersion(),
 		HasExperimental: hasExperimental,
-		HasKubernetes:   hasExperimental && orchestrator == OrchestratorKubernetes,
 		Orchestrator:    orchestrator,
 	}
 	cli.initializeFromClient()
@@ -206,11 +205,15 @@ type ServerInfo struct {
 // ClientInfo stores details about the supported features of the client
 type ClientInfo struct {
 	HasExperimental bool
-	HasKubernetes   bool
 	DefaultVersion  string
 	Orchestrator    Orchestrator
 }
 
+// HasKubernetes checks if kubernetes orchestrator is enabled
+func (c ClientInfo) HasKubernetes() bool {
+	return c.HasExperimental && c.Orchestrator == OrchestratorKubernetes
+}
+
 // NewDockerCli returns a DockerCli instance with IO output and error streams set by in, out and err.
 func NewDockerCli(in io.ReadCloser, out, err io.Writer) *DockerCli {
 	return &DockerCli{in: NewInStream(in), out: NewOutStream(out), err: err}