Increase the code coverage percent on the following files to at least 80%.

File | Percent
salt/state.py | 73
salt/modules/aptpkg.py | 74
salt/modules/file.py | 66
salt/modules/cmdmod.py | 67
salt/utils/event.py | 60

Please be aware that currently the percentage might be inaccurate if the module uses __salt__ due to #64696