[PLT-5465/APIV4] GET /system/health - Improve ping health check to have limits (#6331)

* implement PLT-5465 - Improve ping health check to have limits

* update /ping and delete /health

* remove permission check

model/client4.go

@@ -1737,15 +1737,18 @@ func (c *Client4) GetFileInfosForPost(postId string, etag string) ([]*FileInfo,
 	}
 }
 
-// General Section
+// General/System Section
 
-// GetPing will ping the server and to see if it is up and running.
-func (c *Client4) GetPing() (bool, *Response) {
-	if r, err := c.DoApiGet(c.GetSystemRoute()+"/ping", ""); err != nil {
-		return false, &Response{StatusCode: r.StatusCode, Error: err}
+// GetPing will return ok if the running goRoutines are below the threshold and unhealthy for above.
+func (c *Client4) GetPing() (string, *Response) {
+	if r, err := c.DoApiGet(c.GetSystemRoute()+"/ping", ""); r.StatusCode == 500 {
+		defer r.Body.Close()
+		return "unhealthy", &Response{StatusCode: r.StatusCode, Error: err}
+	} else if err != nil {
+		return "", &Response{StatusCode: r.StatusCode, Error: err}
 	} else {
 		defer closeBody(r)
-		return CheckStatusOK(r), BuildResponse(r)
+		return MapFromJson(r.Body)["status"], BuildResponse(r)
 	}
 }