The role of the device during the 'Fabric Merge'.
In case of a successful fabric merge/stable fabric
only one device can be a 'master'. In case of a
fabric merge failure, there can be multiple 'master'
devices, corresponding to each of the fabric fragments.
All other devices which are not 'master' assume the role
of a 'peer'.
The algorithm for the selection of the 'Merge Master'
device within a stable fabric is platform specific.