Remove apache2 from dependencies

According https://docs.maas.io/2.4/en/release-notes
Since MAAS 2.0 apache2 is a dependency only to maintain updates
from old LTS releases it is safe to remove dependency
for apache2 service from maas_region_services state

Prod related: #PROD-28655 (PROD:28655)

Change-Id: Ia23f9a1e2b0a1647441232497a74083cefdafbad
1 file changed