kas should copy .netrc file from default HOME dir as default

[pBogey]

Hi,

I'm using kas version 4.2 and having some issues with do_fetch method of some recipe. I was debugging using plain bitbake commands and all was fine, while in CI it always failed to fetch some URL from a private repository and this drove me mad.

I have realized that kas is actually creating a temporary HOME directory which is kind of empty, except some .gitconfig and .aws files. I had to carefully read the do_fetch command to even realize this, as the command is pretty long and the HOME export is somewhere in the middle of it, so not really obvious.

Anyway, I think kas should pickup the .netrc file from the current user directory by default, unless otherwise specified through the NETRC_FILE environment variable. I see the value in this variable as providing a way to have custom files for specific builds only, but it should not mess up the classic bitbake build, as it currently does. And in a somewhat hidden way, on top of that, because it's not really obvious at first.

Thanks.