MIPs for Ethernet OAM 802.1ag CFM Protocol at a bridge-domain level

Maintenance Intermediate Points (MIPs) for Ethernet OAM 802.1ag CFM Protocol at a bridge-domain level. Enables to define a maintenance domain (MD) for each default level. The MIP names are created as default-level-number at the [edit protocols oam ethernet connectivity-fault-management] hierarchy level.