Set default IP in examples to external IP address of container

In my opinion this is clearer to users that they'll have to provide the
robot's IP in that case. Also, when run with the start_ursim.sh script
this will work right out of the box

Author: fmauch

examples/dashboard_example.cpp

@@ -28,7 +28,7 @@ using namespace urcl;
 
 // In a real-world example it would be better to get those values from command line parameters / a
 // better configuration system such as Boost.Program_options
-const std::string DEFAULT_ROBOT_IP = "10.53.253.22";
+const std::string DEFAULT_ROBOT_IP = "192.168.56.101";
 
 // We need a callback function to register. See UrDriver's parameters for details.
 

examples/full_driver.cpp

@@ -39,7 +39,7 @@ using namespace urcl;
 
 // In a real-world example it would be better to get those values from command line parameters / a
 // better configuration system such as Boost.Program_options
-const std::string DEFAULT_ROBOT_IP = "127.0.0.1";
+const std::string DEFAULT_ROBOT_IP = "192.168.56.101";
 const std::string SCRIPT_FILE = "resources/external_control.urscript";
 const std::string OUTPUT_RECIPE = "examples/resources/rtde_output_recipe.txt";
 const std::string INPUT_RECIPE = "examples/resources/rtde_input_recipe.txt";

examples/primary_pipeline.cpp

@@ -34,7 +34,7 @@ using namespace urcl;
 
 // In a real-world example it would be better to get those values from command line parameters / a better configuration
 // system such as Boost.Program_options
-const std::string DEFAULT_ROBOT_IP = "127.0.0.1";
+const std::string DEFAULT_ROBOT_IP = "192.168.56.101";
 
 int main(int argc, char* argv[])
 {

examples/primary_pipeline_calibration.cpp

@@ -61,7 +61,7 @@ class CalibrationConsumer : public urcl::comm::IConsumer<urcl::primary_interface
 
 // In a real-world example it would be better to get those values from command line parameters / a better configuration
 // system such as Boost.Program_options
-const std::string DEFAULT_ROBOT_IP = "127.0.0.1";
+const std::string DEFAULT_ROBOT_IP = "192.168.56.101";
 
 int main(int argc, char* argv[])
 {

examples/rtde_client.cpp

@@ -35,7 +35,7 @@ using namespace urcl;
 
 // In a real-world example it would be better to get those values from command line parameters / a better configuration
 // system such as Boost.Program_options
-const std::string DEFAULT_ROBOT_IP = "127.0.0.1";
+const std::string DEFAULT_ROBOT_IP = "192.168.56.101";
 const std::string OUTPUT_RECIPE = "examples/resources/rtde_output_recipe.txt";
 const std::string INPUT_RECIPE = "examples/resources/rtde_input_recipe.txt";
 const std::chrono::milliseconds READ_TIMEOUT{ 100 };