Use stack ID to create domain project name

If the project for a given stack didn't get deleted for any reason then
launching a stack with the same name will fail as project names
are enforced to be unique.

By using the stack ID instead this issue is avoided if the project delete
didn't occur.

The resulting project name is truncated to the limit of 64.

Change-Id: Iba09cf94bdaa6a92d9520ed1743805862dc1b14d
Closes-Bug: #1288514
Add space to description of stack_domain_admin

Without the space we have words being concatenated in the final
description.

Change-Id: I67dcd53bde64afccecd61af45cf7250473f3974a
Merge "Add space to description of stack_domain_admin"