Docs: Document jaeger tracing instrumentation (#21392)

Document jaeger tracing instrumentation.

Co-Authored-By: Diana Payton <52059945+oddlittlebird@users.noreply.github.com>
Co-authored-by: Carl Bergquist <carl.bergquist@gmail.com>
Co-authored-by: Marcus Efraimsson <marcus.efraimsson@gmail.com>

docs/sources/administration/jaeger-instrumentation.md

++++
+title = "Jaeger instrumentation"
+description = "Jaeger traces emitted and propagation by Grafana"
+keywords = ["grafana", "jaeger", "tracing"]
+type = "docs"
+[menu.docs]
+parent = "admin"
+weight = 9
++++
+
+# Jaeger instrumentation
+
+Grafana supports [Jaeger tracing](https://www.jaegertracing.io/).
+
+Grafana can emit Jaeger traces for its HTTP API endpoints and propagate Jaeger trace information to data sources.
+All HTTP endpoints are logged evenly (annotations, dashboard, tags, and so on).
+When a trace ID is propagated, it is reported with operation 'HTTP /datasources/proxy/:id/*'.
+
+Refer to [Configuration]({{< relref "configuration.md#tracing-jaeger" >}}) for information about enabling Jaeger tracing.

docs/sources/menu.yaml

@@ -77,12 +77,14 @@
           name: Dashboard and Folder
         - link: /permissions/datasource_permissions/
           name: Data source
+    - name: Provisioning
+      link: /administration/provisioning/
     - name: Grafana CLI
       link: /administration/cli/
     - name: Internal metrics
       link: /administration/metrics/
-    - name: Provisioning
-      link: /administration/provisioning/
+    - name: Jaeger instrumentation
+      link: /administration/jaeger-instrumentation/
     - name: Set up Grafana for high availability
       link: /tutorials/ha_setup/
     - name: Troubleshooting