remove cause from resource_exhausted error and add operation. (#76)

Author: nishkrishnan

cloud/temporal_cloud_openmetrics.json

@@ -4246,9 +4246,9 @@
               },
               "editorMode": "code",
               "exemplar": true,
-              "expr": "sum(temporal_cloud_v1_resource_exhausted_error_count{temporal_namespace=~\"$temporal_namespace\"}) by (temporal_namespace, resource_exhausted_cause)",
+              "expr": "sum(temporal_cloud_v1_resource_exhausted_error_count{temporal_namespace=~\"$temporal_namespace\"}) by (temporal_namespace, operation)",
               "interval": "",
-              "legendFormat": "{{temporal_namespace}}-{{resource_exhausted_cause}}",
+              "legendFormat": "{{temporal_namespace}}-{{operation}}",
               "range": true,
               "refId": "A"
             }