cardiff: generic do_plot() function
cardiff: generic do_plot() function

At least, plotting will be a common thing between raw data and metadata.
So let's make a generic function for both.

lebauce/edeploy,redhat-cip/edeploy,lebauce/edeploy,enovance/edeploy,redhat-cip/edeploy,enovance/edeploy,redhat-cip/edeploy,enovance/edeploy,lebauce/edeploy,lebauce/edeploy,redhat-cip/edeploy,enovance/edeploy