networkd: report IPv4 address changes to xapi (as well as IPv6)
networkd: report IPv4 address changes to xapi (as well as IPv6)

DHCP should now work well on most distros, and we can now get rid of the patch
to dhclient-script in dom0.hg (which only applies to a certain CentOS version).

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

Frezzle/xen-api,ravippandey/xen-api,simonjbeaumont/xen-api,agimofcarmen/xen-api,robertbreker/xen-api,jjd27/xen-api,salvocambria/xen-api,cheng-z/xen-api,ravippandey/xen-api,jjd27/xen-api,koushikcgit/xen-api,vasilenkomike/xen-api,anoobs/xen-api,jjd27/xen-api,cheng-z/xen-api,koushikcgit/xen-api,robertbreker/xen-api,salvocambria/xen-api,jjd27/xen-api,robertbreker/xen-api,rafalmiel/xen-api,guard163/xen-api,cheng--zhang/xen-api,guard163/xen-api,thomassa/xen-api,vasilenkomike/xen-api,cheng-z/xen-api,cheng-z/xen-api,srowe/xen-api,euanh/xen-api,anoobs/xen-api,djs55/xen-api,rafalmiel/xen-api,huizh/xen-api,koushikcgit/xen-api,Frezzle/xen-api,guard163/xen-api,cheng-z/xen-api,srowe/xen-api,djs55/xen-api,srowe/xen-api,euanh/xen-api,rafalmiel/xen-api,Frezzle/xen-api,anoobs/xen-api,cheng--zhang/xen-api,euanh/xen-api,vasilenkomike/xen-api,salvocambria/xen-api,ravippandey/xen-api,huizh/xen-api,euanh/xen-api,koushikcgit/xen-api,anoobs/xen-api,djs55/xen-api,euanh/xen-api,koushikcgit/xen-api,cheng--zhang/xen-api,anoobs/xen-api,guard163/xen-api,agimofcarmen/xen-api,huizh/xen-api,thomassa/xen-api,huizh/xen-api,cheng--zhang/xen-api,simonjbeaumont/xen-api,jjd27/xen-api,salvocambria/xen-api,koushikcgit/xen-api,thomassa/xen-api,euanh/xen-api,agimofcarmen/xen-api,huizh/xen-api,huizh/xen-api,thomassa/xen-api,robertbreker/xen-api,robertbreker/xen-api,anoobs/xen-api,agimofcarmen/xen-api,robertbreker/xen-api,salvocambria/xen-api,djs55/xen-api,srowe/xen-api,cheng--zhang/xen-api,vasilenkomike/xen-api,djs55/xen-api,vasilenkomike/xen-api,agimofcarmen/xen-api,simonjbeaumont/xen-api,Frezzle/xen-api,simonjbeaumont/xen-api,cheng--zhang/xen-api,ravippandey/xen-api,vasilenkomike/xen-api,cheng-z/xen-api,jjd27/xen-api,simonjbeaumont/xen-api,thomassa/xen-api,salvocambria/xen-api,ravippandey/xen-api,djs55/xen-api,cheng-z/xen-api,rafalmiel/xen-api,Frezzle/xen-api,thomassa/xen-api,simonjbeaumont/xen-api,guard163/xen-api,agimofcarmen/xen-api,srowe/xen-api,guard163/xen-api,ravippandey/xen-api,rafalmiel/xen-api,cheng--zhang/xen-api,rafalmiel/xen-api