Allow to request logs for all servers in the stack

adds logic for users of stack_create and update_stack methods
to request logging of console for all OS::Nova::Server resources
present in the stack.

Aim is to use it in tests that create servers tied to WaitCondition
to be able to debug Timeout issues related to them.

Related-Issue: PRODX-11681
Related-Issue: PRODX-11682
Change-Id: Ic767c1523098b8e5ab67b91f0b8c4d8dc83337fa
1 file changed