shared.cfg.guest-hw: Move ethtool's config to its own config file

The config variants in guest-hw.cfg file would overwite config
in the test case, thus let's put them all in test's config file
directly.

CC: Yunping Zheng <yunzheng@redhat.com>
Signed-off-by: Qingtang Zhou <qzhou@redhat.com>
shared.cfg.guest-hw: Move jumbo's config into its config file

CC: Yunping Zheng <yunzheng@redhat.com>
Signed-off-by: Qingtang Zhou <qzhou@redhat.com>