Bridge port update - 9

Added back-end #update #routine for #extended #bridge #port parameter #admin #flags in ethernet module. This will control port level attributes like #CoS, #TC and #PCP #mapping, #service #UNI, #ENNI, #VUNI and #spanning-tree enable. These attributes are checked for their correctness and valid ones are updated in the back-end structures.

#Ethernet update 100 ...
[commit 91a48c92bcbc6075b151553d94996d83767c66bb]