Ignore H803 from Hacking.

H803 checks for a period in commit messages, something the community
clearly rejected as a sensible check: periods in commit messages
should neither be rejected or required.

The email thread on this issue is here:

http://lists.openstack.org/pipermail/openstack-dev/2013-June/010837.html

Change-Id: I754e10ca01b3e6f8c6482e1bcd4c2e2ca8c1cfc9
Merge "Ignore H803 from Hacking."
Update generate_sample.sh to allow custom configs

If any *.conf.sample files exist in the tools/config/
directory we append those to the generated script as well.

This allows projects to append custom config file snippets to
the generated config file and is useful for things like
keystone_authtoken information.

Change-Id: I2af0db4d5c47fc307540cdb0d1cce171d3aa5b27