Add error and metadata yaml for OCC metrics

This commit adds the error and metadata yaml for the OCC metrics
which would be logged when the host sends the ESEL info.

Change-Id: I0c1faba6d152f2bd4cbf504ece96eb36980f36ac
Signed-off-by: Tom Joseph <tomjoseph@in.ibm.com>
diff --git a/org/open_power/OCC/Metrics.metadata.yaml b/org/open_power/OCC/Metrics.metadata.yaml
new file mode 100644
index 0000000..7516c61
--- /dev/null
+++ b/org/open_power/OCC/Metrics.metadata.yaml
@@ -0,0 +1,5 @@
+- name: Event
+  level: INFO
+  meta:
+    - str: "ESEL=%s"
+      type: string