Add blazar to fluentd aggregation

If Blazar is enabled, ensure that fluentd processes its logs.

Change-Id: If71d5c056c042667388dae8e4ee6d51a5ecab46e

ansible/roles/common/templates/conf/input/00-global.conf.j2

@@ -3,6 +3,7 @@
 {% set services = [
     ( 'aodh', enable_aodh ),
     ( 'barbican', enable_barbican ),
+    ( 'blazar', enable_blazar ),
     ( 'ceilometer', enable_ceilometer ),
     ( 'cinder', enable_cinder ),
     ( 'cloudkitty', enable_cloudkitty ),