add a field to indicate whether a boot entry is currently running (booted)

[bmr-cymru]

It should be possible to find out whether a given boot entry matches the currently running system. This could be an additional field in the boom list report:

$ boom list
BootID  Version                  Name                            RootDevice                      Booted               
12a2696 4.11.12-100.fc24.x86_64  Fedora                          /dev/vg00/lvol0-snapshot2       yes
bca4f34 3.3.5                    Fedora                          /dev/vg00/lvol0-snap            no
463ae3c 2.2.2-2.fc24.x86_64      Fedora                          /dev/vg_root/root               no
676709f 3.3.10                   Ubuntu                          /dev/vg00/lvol0                 no