Tempo: Update docs and default Tempo metrics query (#62185)

Update docs and default tempo metrics query

docs/sources/datasources/jaeger/_index.md

@@ -154,7 +154,7 @@ datasources:
         tags: [{ key: 'service.name', value: 'service' }, { key: 'job' }]
         queries:
           - name: 'Sample query'
-            query: 'sum(rate(tempo_spanmetrics_latency_bucket{$__tags}[5m]))'
+            query: 'sum(rate(traces_spanmetrics_latency_bucket{$__tags}[5m]))'
     secureJsonData:
       basicAuthPassword: my_password
 ```

docs/sources/datasources/tempo/_index.md

@@ -175,7 +175,7 @@ datasources:
         tags: [{ key: 'service.name', value: 'service' }, { key: 'job' }]
         queries:
           - name: 'Sample query'
-            query: 'sum(rate(tempo_spanmetrics_latency_bucket{$__tags}[5m]))'
+            query: 'sum(rate(traces_spanmetrics_latency_bucket{$__tags}[5m]))'
       serviceMap:
         datasourceUid: 'prometheus'
       search:

public/app/features/explore/TraceView/createSpanLink.test.ts

@@ -496,7 +496,7 @@ describe('createSpanLinkFactory', () => {
       expect(defaultLink!.title).toBe('defaultQuery');
       expect(defaultLink!.href).toBe(
         `/explore?left=${encodeURIComponent(
-          '{"range":{"from":"2020-10-14T01:00:00.000Z","to":"2020-10-14T01:00:01.000Z"},"datasource":"prom1Uid","queries":[{"expr":"histogram_quantile(0.5, sum(rate(tempo_spanmetrics_latency_bucket{operation=\\"operation\\"}[5m])) by (le))","refId":"A"}]}'
+          '{"range":{"from":"2020-10-14T01:00:00.000Z","to":"2020-10-14T01:00:01.000Z"},"datasource":"prom1Uid","queries":[{"expr":"histogram_quantile(0.5, sum(rate(traces_spanmetrics_latency_bucket{service=\\"test service\\"}[5m])) by (le))","refId":"A"}]}'
         )}`
       );
 

public/app/features/explore/TraceView/createSpanLink.tsx

@@ -476,7 +476,7 @@ function buildMetricsQuery(
   span: TraceSpan
 ): string {
   if (!query.query) {
-    return `histogram_quantile(0.5, sum(rate(tempo_spanmetrics_latency_bucket{operation="${span.operationName}"}[5m])) by (le))`;
+    return `histogram_quantile(0.5, sum(rate(traces_spanmetrics_latency_bucket{service="${span.process.serviceName}"}[5m])) by (le))`;
   }
 
   let expr = query.query;