Bug 1837947

Description of problem:
pesign.service fails to start with the following error:

The unit files have no installation config (WantedBy=, RequiredBy=, Also=,
Alias= settings in the [Install] section, and DefaultInstance= for template
units). This means they are not meant to be enabled using systemctl.
 
Possible reasons for having this kind of units are:
• A unit may be statically enabled by being symlinked from another unit's
  .wants/ or .requires/ directory.
• A unit's purpose may be to act as a helper for some other unit which has
  a requirement dependency on it.
• A unit may be started when needed via activation (socket, path, timer,
  D-Bus, udev, scripted systemctl call, ...).
• In case of template units, the unit is meant to be enabled with some
  instance name specified.

Version-Release number of selected component (if applicable):
0.112.30.fc32

How reproducible:
test starting or enabling pesign.service...happens every time.

Steps to Reproduce:
1. install pesign
2. try to start or enable service
3. note unit file error message

Actual results:
The unit files have no installation config (WantedBy=, RequiredBy=, Also=,
Alias= settings in the [Install] section, and DefaultInstance= for template
units). This means they are not meant to be enabled using systemctl.
 
Possible reasons for having this kind of units are:
• A unit may be statically enabled by being symlinked from another unit's
  .wants/ or .requires/ directory.
• A unit's purpose may be to act as a helper for some other unit which has
  a requirement dependency on it.
• A unit may be started when needed via activation (socket, path, timer,
  D-Bus, udev, scripted systemctl call, ...).
• In case of template units, the unit is meant to be enabled with some
  instance name specified.

Expected results:
service enabled and started when passing the relevant commands to the unit file

Additional info:
fwupd tries to restart this service during update. by default pesign is not installed, if installed it's going to throw this error when the restart action is tried. There is a bug against fwupd already about trying to restart pesign.service during the update process.