Increase collectd timeout

When GlusterFS manages many volumes, the default value of 5 seconds is
too low. This change increases it to 10 seconds and allows for setting
up a larger value in the model.

Change-Id: Ib1fc9c30896839a21cea1c3127c78ab8e71e670b
diff --git a/glusterfs/files/collectd_glusterfs.conf b/glusterfs/files/collectd_glusterfs.conf
index 479955e..b66d63e 100644
--- a/glusterfs/files/collectd_glusterfs.conf
+++ b/glusterfs/files/collectd_glusterfs.conf
@@ -1,4 +1,5 @@
 Import "collectd_glusterfs"
 
 <Module "collectd_glusterfs">
+    Timeout {{ plugin.timeout|default('10') }}
 </Module>