NetworkManager bug fix and enhancement update

NetworkManager is a system network service that manages network devices and
connections, attempting to keep active network connectivity when available.
Its capabilities include managing Ethernet, wireless, mobile broadband
(WWAN), and PPPoE devices, as well as providing VPN integration with a
variety of different VPN services.

Bug Fix(es) and Enhancement(s):

* NetworkManager doesn't initialize an interface, reports startup complete
when booting for the first time (BZ#1940071)