Add tests for command

[butlerx]

All commands should be able to be tested locally without an LDAP. This Requires mocking LDAP, SMTP and mailman

• [ ] Test per command
  • [ ] add
  • [ ] disable
  • [ ] enable
  • [ ] search
  • [ ] free
  • [ ] generate
  • [ ] renew
  • [ ] reset-password
  • [ ] reset-shell
  • [ ] update
  • [ ] alert-unpaid
  • [ ] delete-unpaid
  • [ ] disable-unpaid
  • [ ] new-year
• [ ] mock
  • [ ] ldap
    • [x] client
    • [ ] redbrick data
    • [ ] dcu data
  • [ ] smtp
  • [ ] mailman

[butlerx]

Test suite setup and ldap mocks added