In order to cater for implementations which 'overlay' or 'wrap'
OSA and use the AIO bootstrap process, the following changes
are implemented:
- The paths to source the configuration files and scripts are
now customisable so that the role may be executed by a
playbook that is not in the OSA repository.
- The path of the conf.d files may be provided to the role in
order to allow conf.d files to be sourced from outside the
OSA repository.
- The resulting file names for the user_variables and
user_secrets configuration are now customisable.
Change-Id: I453342c88a6768641c96e3ff174aaeec5d554845
9fac196988