Add metadata to disable apache mods

Introduce a new pillar apache:server:mods that is a dictionary with
the new module metadata. Allows to manage apache modules by setting:

enabled: True/False
status: disabled/enabled

Change-Id: I01c4a6d0f77ec22d7dd33c047f8e349216e8db67
Related-Prod: PROD-23524
2 files changed