What is the correct way to change username/passwrod to login into console and change the password of an ensemble ?

Issue

• How to change username/password to login into the system ? How to change ensemble password ?

JBossFuse:admin@fabric-fr01> fabric:ensemble-password --commit password

• Only the current password is allowed access to fabric now.(And then disconnecting and connecting again proves that only the former password works.)
• My understanding is that an ensemble comes to life with a password that cannot be changed ever.
• Is this correct? Else, could you please provide me with the exact steps to change the password?
• Immutable shared passwords are a severe security exposure. It might well prevent us to use Fabric at all.