Add SSL parameters for rabbit

Adds the following parameters:
 * kombu_ssl_ca_certs option
 * kombu_ssl_certfile option
 * kombu_ssl_keyfile option
 * kombu_ssl_version option

Change-Id: I226ee5c6964cf9bbb13b14b70aa2139b20858788
Fix outdated DB connection information

In Icehouse, the format of heat.conf has changed to be more consistent
with other projects.  What used to be:
[DEFAULT]
sql_connection= ...

Is now:

[database]
connection= ...

This patch fixes the heat module so that it correctly populates
database connection information.

Change-Id: I6edc9c7b58dcd5569f20f202b9b665431c7b0845
Closes-Bug: #1308868
Merge "Add SSL parameters for rabbit"