Change azbatch live test region (Azure#24554)

Author: chlowell

sdk/batch/azbatch/ci.yml

@@ -25,8 +25,9 @@ extends:
   template: /eng/pipelines/templates/jobs/archetype-sdk-client.yml
   parameters:
     EnableRaceDetector: true
-    Location: westus2
+    # the test subscription has the required batch account and CPU core quotas in brazilsouth
+    Location: brazilsouth
     RunLiveTests: true
     ServiceDirectory: batch/azbatch
-    TimeOutInMinutes: 20
+    TimeOutInMinutes: 25
     UsePipelineProxy: false