Bridge filtering database update - 7

Added #constraint #type handler for #bridge #VLAN #learning-constraint configuration in ethernet module. The learning-constraint configuration for a VLAN indicates the #filtering-database ( #FDB ) to be used for #mac-learning and whether the database is shared with other VLANs. The constraint type of #independent indicates that VLAN uses FDB independent of other VLANs. When VLAN shares the FDB with other VLANs constraint type is kept as #shared.

#Ethernet update 75 ...
[commit 419892affabf06d0c5b51034d3fb07458c234353]