The value of the object svcMgmtVpls specifies, only if
svcType = 'tls' whether or not the service is a management
vpls.
If set to false the service is acting as a regular VPLS
service. If set to true, the service is acting as a
management VPLS service. This implies that RSTP will
always be enabled, and that the conclusions of this RSTP
can be associated to different (regular) VPLSs.
The value of this object cannot be changed after creation.