Before:
  call ale#assert#SetUpLinterTest('systemd', 'systemd_analyze')

After:
  call ale#assert#TearDownLinterTest()

Execute(The default command should be correct):
  AssertLinter 'systemd-analyze',
  \ 'SYSTEMD_LOG_COLOR=0 ' . ale#Escape('systemd-analyze') . ' --user verify %s'
