Add multi-region support to collectd plugins

Change-Id: I2ac4a7f85200d21eccc3edf304d58354885e9bf6
diff --git a/keystone/files/collectd_openstack_keystone.conf b/keystone/files/collectd_openstack_keystone.conf
index 61ea023..599229e 100644
--- a/keystone/files/collectd_openstack_keystone.conf
+++ b/keystone/files/collectd_openstack_keystone.conf
@@ -5,6 +5,7 @@
     Username "{{ plugin.username }}"
     Password "{{ plugin.password }}"
     Tenant "{{ plugin.tenant }}"
+    Region "{{ plugin.region }}"
     MaxRetries "2"
     Timeout "20"
 </Module>
diff --git a/keystone/meta/collectd.yml b/keystone/meta/collectd.yml
index 01e5e79..c2cf1c8 100644
--- a/keystone/meta/collectd.yml
+++ b/keystone/meta/collectd.yml
@@ -18,6 +18,7 @@
     username: {{ server.admin_name }}
     password: {{ server.admin_password }}
     tenant: {{ server.admin_tenant }}
+    region: {{ server.region }}
   check_openstack_api:
     plugin: python
     template: keystone/files/collectd_check_openstack_api.conf