Change meta data service timeout to 200ms (#35039)

Author: lzchen

sdk/monitor/azure-monitor-opentelemetry-exporter/CHANGELOG.md

@@ -18,6 +18,9 @@
 
 ### Bugs Fixed
 
+- Reduce vm metadata service timeout to 200ms
+    ([#35039](https://github.com/Azure/azure-sdk-for-python/pull/35039))
+
 ### Other Changes
 
 - Updated FastAPI sample

sdk/monitor/azure-monitor-opentelemetry-exporter/azure/monitor/opentelemetry/exporter/statsbeat/_statsbeat_metrics.py

@@ -212,7 +212,7 @@ def _get_azure_compute_metadata(self) -> bool:
             request_url = "{0}?{1}&{2}".format(
                 _AIMS_URI, _AIMS_API_VERSION, _AIMS_FORMAT)
             response = requests.get(
-                request_url, headers={"MetaData": "True"}, timeout=5.0)
+                request_url, headers={"MetaData": "True"}, timeout=0.2)
         except (requests.exceptions.ConnectionError, requests.Timeout):
             # Not in VM
             self._vm_retry = False