The change updates the cinder role to isolate the packages
being installed when using the LVM volume driver. Currently
the tgt and other packages are being installed everywhere as
well as setting up specific LVM config in all locations. This
can and will cause issues when the role is executed on metal
or in various other scenarios on top of the fact that the
installation and maintenance of the extra packages is a burden
that we no longer need to carry. To resolve this, the pattern for
multi-distro support was added to the package install process and
conditionals were added to the specific LVM volume type tasks.
Change-Id: I85568e5680812c37fbf4aa4a21419127f8cee8d9
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>
0c6e5fb911