This change adds the ability to customise the mode applied to a
directory in the container_directories group_vars. Additionally, we
change the default mode of a directory with an unspecified mode to 700.
This latter change requires us to flip the following back to 755
otherwise the respective service throws a permission denied error:
* /var/www/cgi-bin/keystone
* /var/lib/neutron
* /var/lib/nova
A fair bit of additional testing will need to be done before this
merges.
Change-Id: I40b0052876078c3472e88594a5c0d7e039b9817a
Closes-Bug: 1399428
1978bf5fbb