[minor] Added HMAC to COS role

[Vishal-patel-7]

As a part of https://jsw.ibm.com/browse/MAXMF-455 we added new environment variable USE_HMAC to create COS with HMAC support. There is PR ibm-mas/ansible-devops#1407 in ansible-devops regarding this.

[whitfiea]

The ansible-devops role now allows the config scope to be set and the use_hmac to be set, which is all fine. But that means that for an env that has assist, mvi and manage installed we need the following set:

• objectstorage-cfg at system scope with use_hmac as false
• objectstorage-cfg at app/workspace(for manage) scope with use_hmac as true

I don't think the changes here allow the scope to be set or for more than one config/dependency to be created

[Vishal-patel-7]

The ansible-devops role now allows the config scope to be set and the use_hmac to be set, which is all fine. But that means that for an env that has assist, mvi and manage installed we need the following set:

• objectstorage-cfg at system scope with use_hmac as false
• objectstorage-cfg at app/workspace(for manage) scope with use_hmac as true

I don't think the changes here allow the scope to be set or for more than one config/dependency to be created

I don't know how to handle this but the aim for the changes are to give new environment variable support for ansible-devops role. @chiragcsatani can you confirm what we need to do ? This is to fix fvt issue for manage but for assist & mvi we may have to revisit this code and ansible-devops role also.