configure env_keep SSH_AUTH_SOCK by default in ubuntu/debian

[ixpict]

It's very useful options, let's keep it on by default?

[saz]

@ixpict Have you checked, if this is a default value on Debian based systems?

[baurmatt]

I've checked Ubuntu 14.04/16.04/18.04: Its not included by default.

I would suggest to not merge this as it might lead to security problems.

A good alternative would probably be to make the "Defaults" configurable so everyone can configure sudo for their usage.

[ixpict]

It's not a default option, but very useful.

@baurmatt you mean something like presets?

[saz]

@baurmatt Same thoughts.

@ixpict I'll see if I'll have the time to come up with a better solution, but I don't think, I'll be able to get this worked out before the next release

[saz]

Please leave this PR open as a reminder for me :-)

[ixpict]

ok :)