Do not remove perl during cleanup process

[jtreminio]

Perl is required for installing/compiling and running too many programs to make it worth removing - users will simply need to install it back.

[rickard-von-essen]

I somewhat disagree, packages not strictly needed by Vagrant or which are not part of minimal installation shouldn't be included. The are easy enough to install. You can run allot of things on Linux without perl.

[cheeseplus]

Thing is perl is almost always part of a base install and a variety of packages, probably incorrectly, depend on it being there. It doesn't add enough weight that I'm concerned about it. I think the expectation that it be there on most Linuxes is prevalent so even if I'm not keen on perl it's a reasonable assumption from the average user.

I mean if it blows up the images sizes by 100MB or something I can see wanting to avoid it but also if people are just installing it every time anyway we can save them a few steps.

[rickard-von-essen]

and a variety of packages, probably incorrectly, depend on it being there.

If that is the case I think there is a reason to keep it in the box, but to do it just because you don't want have to install it shouldn't be enough.

[jtreminio]

@rickard-von-essen sorry, yes, I may has misworded it. Perl is required by enough packages in a vanilla OS that it makes sense to keep it around.

[cheeseplus]

Totally, in this case it's more - system stuff will unexpectedly break. The impression when it was first added was that it was only needed for build-tools which after chatting with @jtreminio in IRC seems to not be the case.

[cheeseplus]

Also I'll probably close this PR and open a new one so we don't have to have @jtreminio jump through the DCO hoop but I'll keep it open until then.

[cheeseplus]

Closing for #731