Use "rabbit_use_ssl" for ocata

Ensure "rabbit_use_ssl" is specified in the [oslo_messaging_rabbit]
config section instead of "ssl" for Ocata, since "ssl" was not yet
introduced.

This is fixed by using section-oslo-messaging-rabbit for pike and
above rather than ocata and above, and using section-rabbitmq-oslo
for ocata.

Change-Id: I9209a3cdc9b52a918621ad2c328e67aa616f18d6
Closes-Bug: #1838696

src/templates/neutron.conf

@@ -6,11 +6,8 @@
 verbose = {{ options.verbose }}
 debug = {{ options.debug }}
 
-# Transport URL must be in the [DEFAULT] section
-{% include "parts/section-transport-url" %}
-
 # End of [DEFAULT] section
-{% include "parts/section-oslo-messaging-rabbit" %}
+{% include "parts/section-rabbitmq-oslo" %}
 
 [agent]
 root_helper = sudo /usr/bin/neutron-rootwrap /etc/neutron/rootwrap.conf

src/templates/pike/neutron.conf

@@ -0,0 +1,19 @@
+###############################################################################
+# [ WARNING ]
+# Configuration file maintained by Juju. Local changes may be overwritten.
+###############################################################################
+[DEFAULT]
+verbose = {{ options.verbose }}
+debug = {{ options.debug }}
+
+# Transport URL must be in the [DEFAULT] section
+{% include "parts/section-transport-url" %}
+
+# End of [DEFAULT] section
+{% include "parts/section-oslo-messaging-rabbit" %}
+
+[agent]
+root_helper = sudo /usr/bin/neutron-rootwrap /etc/neutron/rootwrap.conf
+
+[oslo_concurrency]
+lock_path = /var/lock/neutron