Do signal xapi when an IP address is removed
Do signal xapi when an IP address is removed

BobB pointed out that when a DHCP lease expires, the IP address may go away.
Therefore, a signal to xapi for it to update its DB makes sense.

Signed-off-by: Rob Hoes <8783b3376fb07d39edffc8d7da68a6de3874a7e6@citrix.com>

djs55/xcp-networkd,koushikcgit/xcp-networkd,koushikcgit/xcp-networkd,djs55/xcp-networkd,sharady/xcp-networkd,sharady/xcp-networkd