Easy add and remove packages, disable services

[timstoop]

Sometimes it is needed to simply remove some packages everywhere or add them everywhere. Or to disable a service. This especially in relation with CIS DIL Benchmark 2.2.1 (Time Synchronization), 2.2.16 (Ensure rsync service is not enabled) and 2.3.4 (Ensure telnet client is not installed), where it may be too much to add a specific module for each application.

Let me know if something like this is acceptable or if you'd like to see this solved another way.

[mcgege]

I think this is a good idea, especially on then unwanted_packages ... for wanted_packages vim might be a better example, because if you take ntp it would be logical for me to also configure this service and keep it running. For disables_services: What if this service is not installed?
In general I fear that this will only be useful in small and/or homogeneous environments - the packages / services have different names per distribution, so you cannot define this globally here.
@artem-sidorenko What's your opinion?

[timstoop]

I'm happy to change it to empty arrays and give an example for Debian Stretch in the documentation, if you feel that's better.

[artem-sidorenko]

@mcgege I have the same view

[timstoop]

(I'm on holiday still this week, will fix the commit next week.)

[timstoop]

Would this be acceptable?

[mcgege]

Looks good otherwise, thanks a lot!

[mcgege]

Good description, just remove the double to write

[mcgege]

Many thanks for your contribution!