Set network isolation policy for aspnetcore-ci (#65168)

.azure/pipelines/ci.yml

@@ -117,6 +117,8 @@ resources:
 extends:
   template: v1/1ES.Official.PipelineTemplate.yml@1esPipelines
   parameters:
+    settings:
+      networkIsolationPolicy: Permissive,CFSClean2
     sdl:
       sourceAnalysisPool:
         name: NetCore1ESPool-Svc-Internal