notify/email: refactor tests (#3078)
notify/email: refactor tests (#3078)

We don't need to test `getPassword()` separately as it can be covered
with the tests already checking the various authentication methods.

Signed-off-by: Simon Pasquier <38e2d22e48be18381a59028f88390cad04670376@redhat.com>

Signed-off-by: Simon Pasquier <38e2d22e48be18381a59028f88390cad04670376@redhat.com>
prometheus/alertmanager,prometheus/alertmanager,prometheus/alertmanager,prometheus/alertmanager