devstack-gate needs to be able to make an image that has pre-downloaded
but not installed a sequence of packages. To support that, add a -d flag
to install-packages to allow downloading but not installing. -d passes
through on a dpkg install, and with this patch should be transformed
to --downloadonly which is the yum version.
Change-Id: Ia4e61fa4304df86afbee7dfc8067ea1bdf528f3e
ARM doesn't have a generic Linux image due to the soc-specific nature of Linux
kernels today, so we drop the manual installation of that package, replacing it
with a dist-upgrade instead. This involved tweaks to the dpkg and fedora
install-package scripts.
Change-Id: I97924b80ca87781307e1087b9fe4b18215770e84
