Integrate rally with osprofiler

This patch adds integration of osprofiler with rally.
Rally provides possibility for such integration and when
osprofiler is configured in rally it will now place
osprofiler's report for each rally test iteration in
"Scenario Data" tab.

Change-Id: I730de963ef6fd0485be6ea947d085067057a500c

.zuul.yaml

@@ -162,18 +162,23 @@
 - job:
     name: neutron-rally-task
     parent: rally-task-neutron
-    timeout: 7800
+    timeout: 10800
     vars:
       devstack_localrc:
         USE_PYTHON3: true
+        OSPROFILER_COLLECTOR: redis
+        OSPROFILER_HMAC_KEYS: "neutron-hmac-key-used-in-zuul-ci"
+      rally_task: rally-jobs/task-neutron.yaml
       devstack_plugins:
+        osprofiler: https://opendev.org/openstack/osprofiler
         rally-openstack: https://opendev.org/openstack/rally-openstack
         neutron: https://opendev.org/openstack/neutron
       devstack_services:
         neutron-trunk: true
-      rally_task: rally-jobs/task-neutron.yaml
     required-projects:
+      - openstack/rally
       - openstack/rally-openstack
+      - openstack/osprofiler
     irrelevant-files:
       - ^.*\.rst$
       - ^doc/.*$