Added to fix RHEL specific issues with config files

When installing on RHEL or using the RDO packages
REDHAT installs configuration files for specific services
into directories under /usr/share these additional configuration
files are in direct conflict with the configs that are in /etc/

To fix this issue we are truncating the file ceilometer-dist.conf and
overloading the file in ceilometer.conf with the values that were in the
dist.conf file. In this case we are simply setting the control_exchange
and which RPC driver to use.

(cherry picked from commit 95dee575ac2230870d7ea63b6ac98c4ffde7b146)

See rcbops/chef-cookbooks#799
Merge pull request #47 from claco/issue-799-cent

Merged automatically by jenkins after successful build test