Support Ceph Nautilus release in puppet-ceph

This patch introduces the changes required by osd configuration tasks to
support Nautilus release:

• ceph-disk has been removed and replaced by ceph-volume
• OSDs can not be based on directories anymore, only disks or vg/lv

paths.

• udev configuration is not needed since some releases back.

To pass CI, this job requires to merge [1] and viceversa. To solve
chicken-and-egg, I'm setting p-o-i jobs as non-voting in this patch.
I'll make them voting again after merging both [1] and this one.

[1] https://review.opendev.org/#/c/650281/

Change-Id: I15f061dd38ca6729a454ec96c8c8f5ea28c6f0c6