Description of problem:

Upgrade from 7.1.1 to 7.2.0 drops keycloak's DB resulting with admin's password is dropped to default, custom users are removed, etc.

Version-Release number of selected component (if applicable):

 7.2.0-13

How reproducible:

100% 

Steps to Reproduce:
1. Install 7.1.1 using IIB of 7.2.0-13
2. Do customisations like creating more users, changing default admin's password
3. Run upgrade to 7.2.0
4. Login to upgraded MTA

Actual results:

Admin's password was dropped to default, other users were removed

Expected results:

Everything should remain unchanged 

Additional info: