Ensure that the management network interface is not a
loopback interface otherwise systemctl will report that
the networking job failed on boot.
Test Plan
PASS Build platform-kickstarts
PASS Ensure ISO boots with passing networking job
Closes-Bug: 1976275
Signed-off-by: Charles Short <charles.short@windriver.com>
Change-Id: Ia5dd698fd60546cd08bcc033f2255248fb4a877e
5cff6fc390