Logging: add default path and service names

Add default paths and service names from the reference implementation
in phosphor-logging.  The service for logging is expected to be a
singleton and the manager object resides at a fixed path.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ia8d4ec354dbbe234109562bd76f1f779922da4e0
diff --git a/yaml/xyz/openbmc_project/Logging/Event.interface.yaml b/yaml/xyz/openbmc_project/Logging/Event.interface.yaml
index 0c79c36..fb5d04a 100755
--- a/yaml/xyz/openbmc_project/Logging/Event.interface.yaml
+++ b/yaml/xyz/openbmc_project/Logging/Event.interface.yaml
@@ -28,3 +28,9 @@
       type: array[string]
       description: >
           Additional information in the form of metadata field strings VAR=val
+
+service_names:
+    - default: xyz.openbmc_project.Logging
+
+paths:
+    - namespace: /xyz/openbmc_project/logging