Ensure Ferrum could Handle 10K users with N users works simulteniously

[EvilLord666]

We should Create scenarios to test performance of Ferrum Authorization Server as follows:

1. 10K users in Redis separated:
   • by 50 users in 100 Realm
   • by 1K users in 5 Realms

Scenarios:

1. issue access token by 100 users every second up to 1000 active sessions
2. after 1000 active session is reached, refresh 100 sessions every 10 sec and query 100 random userinfo every second

All discovered issues with parallel operations must be solved during this task.