IfcfgUtil: Remediate `connection_seems_active()` for controller
IfcfgUtil: Remediate `connection_seems_active()` for controller

For the active bonding/bridge connection, when all the port connection
profiles are brought down firstly, then the operstate of the controller
device will change into "down" automatically, which denotes missing the
carrier for the controller device. However, the connection for the
controller device should still be considered as active as long as
there is any valid IP address configured.

Signed-off-by: Wen Liang <5ee3357fb455f67019b3676c8968488c41307286@gmail.com>

linux-system-roles/network,linux-system-roles/network,linux-system-roles/network