Entry containing COPS-PR role information. The entry is
created, deleted and modified by using ccopsRoleStatus.
There is a maximum on the number of roles which may be
configured per device. In order to make a role available for
interface to construct its role combination, such role must
exist in the role table. Deleting a role in ccopsRoleTable
also removes that role from all role combinations for all
interfaces.
Therefore, a particular role can not be added into the role
combination for any interface if it is removed from this table.