Fix statsbeats names (#1089)

Author: lzchen

contrib/opencensus-ext-azure/CHANGELOG.md

@@ -2,6 +2,9 @@
 
 ## Unreleased
 
+- Fix statsbeats metric names
+([#1089](https://github.com/census-instrumentation/opencensus-python/pull/1089))
+
 ## 1.1.0
 Released 2021-10-05
 

contrib/opencensus-ext-azure/opencensus/ext/azure/metrics_exporter/statsbeat_metrics/statsbeat.py

@@ -45,9 +45,9 @@
 _REQ_SUC_COUNT_NAME = "Request Success Count"
 _REQ_FAIL_COUNT_NAME = "Request Failure Count"
 _REQ_DURATION_NAME = "Request Duration"
-_REQ_RETRY_NAME = "Request Retry Count"
-_REQ_THROTTLE_NAME = "Request Throttle Count"
-_REQ_EXCEPTION_NAME = "Request Exception Count"
+_REQ_RETRY_NAME = "Retry Count"
+_REQ_THROTTLE_NAME = "Throttle Count"
+_REQ_EXCEPTION_NAME = "Exception Count"
 
 _ENDPOINT_TYPES = ["breeze"]
 _RP_NAMES = ["appsvc", "functions", "vm", "unknown"]