Routing update traffic are generally marked with dscp cs6 & cs7.
This will be placed in the appropriate queue as per your configuration.
My suggestion would be to have a seperate policy for this control traffic while using assured and expedite forwarding for the rest
eg
lass-map match-any WAN-BED1
match ip dscp cs1
match ip dscp af11
class-map match-all WAN-VOICE
match ip dscp ef
class-map match-all WAN-VIDEO
match ip dscp af41
class-map match-any WAN-SILVER
match ip dscp af21
match ip dscp cs4
class-map match-any WAN-GOLD
match ip dscp af31
class-map match-all WAN-NETWORKCONTROL
match ip dscp cs6 cs7
policy-map WAN-EDGE
class WAN-VOICE
priority percent 20
class WAN-VIDEO
bandwidth percent 13
class WAN-NETWORKCONTROL
bandwidth percent 3
class WAN-GOLD
bandwidth percent 15
class WAN-SILVER
bandwidth percent 19
set dscp af21
class WAN-BED1
bandwidth percent 30
HTH
Narayan