Specifics for Debian in Ceilometer

This patch adds Debian specifics for the use of Debconf,
and removes the unwanted parts of the manual that are
automatically configured in the Debian package.

backport: havana
Change-Id: I40e2a17cdc6fa7f5ff4468a2e75e2302c902c7b2
Spefics for Debian in heat

The patch removes unecessary steps durring the installation
process for the Debian manual (these are automated in the
Debian packages).

Change-Id: I1eb8335c75b62aa58976ce78e66d04c5c34f8461
backport:havana
Edits on vmware-vmdk-driver

Forward port edits done as part of
https://review.openstack.org/#/c/54889

Change-Id: I42cf764fdf8266106440364a4f6dd1f9dd2cc674
backport: none
Merge "Specifics for Debian in Ceilometer"
Merge "Spefics for Debian in heat"
Merge "Edits on vmware-vmdk-driver"