Increases the amount of ram for CoreOS IPA to 2GB
as the base CoreOS image is now 310MB.
Bumped CPU count for CoreOS runs to 2 CPUs as the
concurrency helps boot times for the CoreOS ramdisk.
Adds netbase, udev, and open-iscsi to debian jessie container
as they are no longer present in the default container.
Explicitly set path variable for execution in the debian
container as udevadm is in /sbin, and we may not have
/sbin on the path that is passed through to the
chroot.
Also fixed new pep8 test failures.
Story: #1600228
Task: #16287
Change-Id: I488445dfd261b7bca322a0be7b4d8ca6105750a3
3164053f08