dhcpcd: Install a minimal configuration

Install an optional minimal configuration which requests the
bare minimum we need to gain an address and DNS configuration.

BUG=chromium:297607
TEST=emerge and make sure /etc/dhcpcd-minimal.conf exists

Change-Id: I41a7bd5180a08e3b767e7b303163aebfba9988e2
Reviewed-on: https://chromium-review.googlesource.com/174385
Reviewed-by: mukesh agrawal <quiche@chromium.org>
Commit-Queue: Paul Stewart <pstew@chromium.org>
Tested-by: Paul Stewart <pstew@chromium.org>
2 files changed