network: don't use "ifup -m"

network: don't use "ifup -m"

"ifup -m" was thought to be used by humans in the emergency shell.
Using it programatically shows some other flaw in the execution logic.

Also, "ifup -m" was configuring the interface multiple times on "add"
and "change" uevent, because the "$netif.did-setup" test was not
executed.

(cherry picked from commit 7cca5efdcea4f1431331cf7663fc6fb48a365cdf)