Match contrail api stdout

Change-Id: Ia2c09c258a85fc36394c6f8f2e7e99988c24b897
diff --git a/opencontrail/meta/heka.yml b/opencontrail/meta/heka.yml
index af1a1a8..43bf89b 100644
--- a/opencontrail/meta/heka.yml
+++ b/opencontrail/meta/heka.yml
@@ -124,7 +124,7 @@
     contrail_api_stdout_log:
       engine: logstreamer
       log_directory: "/var/log"
-      file_match: 'contrail/contrail-(?P<Service>discovery-0-stdout)\.log\.?(?P<Seq>\d*)$'
+      file_match: 'contrail/contrail-(?P<Service>(api|discovery)-\d-stdout)\.log\.?(?P<Seq>\d*)$'
       differentiator: ['contrail', '.', 'Service']
       priority: ["^Seq"]
       decoder: "contrail_api_stdout_decoder"