[Telemetry] Add opentelemetry/android as a valid APM agent name (#172898)

## Summary

The `opentelemetry/android` agent was released in September. This PR
adds it to our telemetry collection.

### For maintainers

- [ ] This was checked for breaking API changes and was [labeled
appropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)

packages/kbn-apm-synthtrace-client/src/types/agent_names.ts

@@ -31,6 +31,7 @@ type OpenTelemetryAgentName =
   | 'opentelemetry/python'
   | 'opentelemetry/ruby'
   | 'opentelemetry/swift'
+  | 'opentelemetry/android'
   | 'opentelemetry/webjs';
 
 // Unable to reference AgentName from '@kbn/apm-plugin/typings/es_schemas/ui/fields/agent' due to circular reference

packages/kbn-elastic-agent-utils/src/agent_names.ts

@@ -49,6 +49,7 @@ export type OpenTelemetryAgentName =
   | 'opentelemetry/ruby'
   | 'opentelemetry/rust'
   | 'opentelemetry/swift'
+  | 'opentelemetry/android'
   | 'opentelemetry/webjs';
 export const OPEN_TELEMETRY_AGENT_NAMES: OpenTelemetryAgentName[] = [
   'otlp',
@@ -63,6 +64,7 @@ export const OPEN_TELEMETRY_AGENT_NAMES: OpenTelemetryAgentName[] = [
   'opentelemetry/ruby',
   'opentelemetry/rust',
   'opentelemetry/swift',
+  'opentelemetry/android',
   'opentelemetry/webjs',
 ];
 

x-pack/plugins/apm/common/__snapshots__/apm_telemetry.test.ts.snap

@@ -151,6 +151,12 @@ exports[`APM telemetry helpers getApmTelemetry generates a JSON object with the
                             "description": "Total number of services utilizing the opentelemetry/swift agent within the last day"
                           }
                         },
+                        "opentelemetry/android": {
+                          "type": "long",
+                          "_meta": {
+                            "description": "Total number of services utilizing the opentelemetry/android agent within the last day"
+                          }
+                        },
                         "opentelemetry/webjs": {
                           "type": "long",
                           "_meta": {

x-pack/plugins/apm/server/lib/apm_telemetry/schema.ts

@@ -373,6 +373,13 @@ const apmPerAgentSchema: Pick<
           'Total number of services utilizing the opentelemetry/swift agent within the last day',
       },
     },
+    'opentelemetry/android': {
+      type: 'long',
+      _meta: {
+        description:
+          'Total number of services utilizing the opentelemetry/android agent within the last day',
+      },
+    },
     'opentelemetry/webjs': {
       type: 'long',
       _meta: {

x-pack/plugins/telemetry_collection_xpack/schema/xpack_plugins.json

@@ -2865,6 +2865,12 @@
                 "description": "Total number of services utilizing the opentelemetry/swift agent within the last day"
               }
             },
+            "opentelemetry/android": {
+              "type": "long",
+              "_meta": {
+                "description": "Total number of services utilizing the opentelemetry/android agent within the last day"
+              }
+            },
             "opentelemetry/webjs": {
               "type": "long",
               "_meta": {