edit-node: add --skip-initramfs option to skip the rebuild step if necessary

Bug-Url:https://bugzilla.redhat.com/show_bug.cgi?id=1111741
Change-Id: Ie43706271f09d3e6148602d38f814f6e37241466
Signed-off-by: Joey Boggs <jboggs@redhat.com>
block major version upgrades from tui and cli

Bug-Url:https://bugzilla.redhat.com/show_bug.cgi?id=1095148

Change-Id: I8747d5c28e0c6ee763c27647420b2445c04690ca
Signed-off-by: Joey Boggs <jboggs@redhat.com>