Use dune-python to install python script

automatically installs the pandas requirement

bin/CMakeLists.txt

-dune_symlink_to_source_files(FILES calculate_floprate.py
-                                   make_graph.sh
-                                   performance_regression.py
+dune_install_python_script(SCRIPT calculate_floprate.py
+                           REQUIRES pandas
+                           )
+
+dune_install_python_script(SCRIPT performance_regression.py
+                           REQUIRES pandas
+                           )
+
+dune_symlink_to_source_files(FILES make_graph.sh
                              )