monitoringservice metrics for registered users should distinctly identify users of all organizations

[maria-farooq]

as per organization logic, a sample user/client e.g alice, can be in org1 as well as in org2.
currently monitoringservice metrics puts current register users in a map where key is only user.
hence it can reflect to a problem where all alice of different organizations will be counted as one.
so key of monitoringservice map should be user+":"+organizationSid