CA-400924 - networkd: Add bonds to devs in network_monitor_thread

[last-genius]

Without it, stats for bond's interfaces are not identified correctly.

Fixes: bd4dda5 (IH-715 - rrdp-netdev: Remove double (de)serialization)

[last-genius]

This works, tested manually:

Before the fix:

# xe pif-list params=carrier,device
device ( RO)     : eth0
    carrier ( RO): true


device ( RO)     : bond0
    carrier ( RO): false


device ( RO)     : eth1
    carrier ( RO): false

After:

xe pif-list params=carrier,device
device ( RO)     : eth0
    carrier ( RO): true


device ( RO)     : bond0
    carrier ( RO): true


device ( RO)     : eth1
    carrier ( RO): false

(Same in XenCenter, which shows link status as 'connected' after the fix,
and 'disconnected' before)

The failing test is now also passing, XenRT job #4135142