Set 3m default interval for Openstack input plugin

The Openstack metrics that telegraf collects are not so frequently
changed (number of instances/networks/services etc). There is no
reason to collect them so often. Increasing of the interval will
decrease load on Openstack APIs form telegraf side.

Change-Id: Iba72373bf91b2060d3c0e1b673132960f0b0f25e
diff --git a/keystone/map.jinja b/keystone/map.jinja
index 5adfe78..6fdcdde 100644
--- a/keystone/map.jinja
+++ b/keystone/map.jinja
@@ -93,8 +93,8 @@
             'percentage': 50,
             'all_auths_rate': 0.1,
         },
-        'telegraf_openstack_input_plugin_interval': '1m',
-        'telegraf_openstack_output_plugin_expiration_interval': '2m',
+        'telegraf_openstack_input_plugin_interval': '3m',
+        'telegraf_openstack_output_plugin_expiration_interval': '6m',
         'output_openstack_port': 9127,
     },
 }, grain='os_family', merge=salt['pillar.get']('keystone:monitoring')) %}