Tools like wget and git can read credentials from $HOME/.netrc for servers that require authentication. Allow users to pass in a .netrc file into the kas home dir to support i.e. bitbake https fetching with auth. Signed-off-by: Henning Schild <henning.schild@siemens.com> [Jan: style fix in command-line.rst] Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>