NetworkManager: Disable ifupdown plugin

Ifupdown is used on the Debian and Ubuntu distributions, and reads Ethernet and
Wi-Fi connections from /etc/network/interfaces. It's not needed for
Oniro.

Closes: https://booting.oniroproject.org/distro/oniro/-/issues/134



Signed-off-by: Pavel Zhukov <pavel.zhukov@huawei.com>

meta-oniro-core/recipes-connectivity/networkmanager/networkmanager_%.bbappend

@@ -7,4 +7,4 @@ inherit writables
 WRITABLES = "system-connections"
 WRITABLE_PATH[system-connections] = "/etc/NetworkManager/system-connections"
 
-PACKAGECONFIG_remove = "dhclient dnsmasq"
+PACKAGECONFIG_remove = "dhclient dnsmasq ifupdown"