Bridge port update - 8

Added #bridge #port #level #admin #flags #handler in ethernet module. These flags control parameters like #CoS, #TC and #PCP #mapping, #service #UNI, #ENNI, #VUNI and #spanning-tree operations on the respective port.

#Ethernet update 98 ...
[commit ee6173e7810d74df24ad7c9916c7f9e81bf330f2]