Set proper ownership for the Heka configuration

This change enforces the ownership on the configuration files: 'heka'
user and group for non-container installations and 'root' otherwise.

Change-Id: I92b58421dae0393335d460f41508e3e1c0e8f490
diff --git a/metadata/service/remote_collector/container.yml b/metadata/service/remote_collector/container.yml
index eefddda..52ac6b4 100644
--- a/metadata/service/remote_collector/container.yml
+++ b/metadata/service/remote_collector/container.yml
@@ -7,3 +7,4 @@
     remote_collector:
       enabled: true
       container_mode: true
+      owner: root