[Python wrapper] Added custom time limit for wait_for_servers in Move…

…GroupInterface (moveit#1444)

* Added custom time limit for wait_for_servers

* Retained current hardcoded 5 second limit
* Used double to conform to python accessible API instead of `ros::WallDuration(int, int)`
* API is extended, remains conformant to previous releases

* Ran clang-format on a webedit

moveit_ros/planning_interface/move_group_interface/src/wrap_python_move_group.cpp

@@ -67,10 +67,10 @@ class MoveGroupInterfaceWrapper : protected py_bindings_tools::ROScppInitializer
   // ROSInitializer is constructed first, and ensures ros::init() was called, if
   // needed
   MoveGroupInterfaceWrapper(const std::string& group_name, const std::string& robot_description,
-                            const std::string& ns = "")
+                            const std::string& ns = "", double wait_for_servers = 5.0)
     : py_bindings_tools::ROScppInitializer()
     , MoveGroupInterface(Options(group_name, robot_description, ros::NodeHandle(ns)),
-                         std::shared_ptr<tf2_ros::Buffer>(), ros::WallDuration(5, 0))
+                         std::shared_ptr<tf2_ros::Buffer>(), ros::WallDuration(wait_for_servers))
   {
   }