CRI: Add daemon configuration to StatusResponse as extra information

StatusResponse in CRI returns runtime extra information which is in
the map of Info. Now there is only one key in this map. This patch
add "daemon-config" as another key and its value is the daemon
configuration in json format. With this patch, for example, we can
get pouch root dir from StatusResponse.

Signed-off-by: Wang Rui <baijia.wr@antfin.com>

cri/v1alpha2/cri.go

@@ -130,6 +130,9 @@ type CriManager struct {
 
 	// imageFSPath is the path to image filesystem.
 	imageFSPath string
+
+	// DaemonConfig is the config of daemon
+	DaemonConfig *config.Config
 }
 
 // NewCriManager creates a brand new cri manager.
@@ -160,6 +163,7 @@ func NewCriManager(config *config.Config, ctrMgr mgr.ContainerMgr, imgMgr mgr.Im
 		SandboxBaseDir: path.Join(config.HomeDir, "sandboxes"),
 		SandboxImage:   config.CriConfig.SandboxImage,
 		SnapshotStore:  mgr.NewSnapshotStore(),
+		DaemonConfig:   config,
 	}
 	c.CniMgr, err = cni.NewCniManager(&config.CriConfig)
 	if err != nil {
@@ -1254,7 +1258,12 @@ func (c *CriManager) Status(ctx context.Context, r *runtime.StatusRequest) (*run
 		if err != nil {
 			return nil, err
 		}
+		configByt, err := json.Marshal(c.DaemonConfig)
+		if err != nil {
+			return nil, err
+		}
 		resp.Info["golang"] = string(versionByt)
+		resp.Info["daemon-config"] = string(configByt)
 
 		// TODO return more info
 	}