Skip external config validation if RuntimeDrivenScaling is enabled in Elastic Premium (#7085)

Author: soninaren

release_notes.md

@@ -11,6 +11,7 @@
 - Updated [System.Data.SqlClient to 4.8.2](https://www.nuget.org/packages/System.Data.SqlClient/4.8.2)
 - Added direct refereces to [System.IO.Pipes](https://www.nuget.org/packages/System.IO.Pipes/4.3.0)  and [System.Threading.Overlapped](https://www.nuget.org/packages/System.Threading.Overlapped/4.3.0) to ensure System.Data.SqlClient package update does not impact unification 
 - Updated Java Worker Version to [1.8.2-SNAPSHOT](https://github.com/Azure/azure-functions-java-worker/releases/tag/1.8.2-SNAPSHOT)
+- Skip external config validation if RuntimeDrivenScaling is enabled in Elastic Premium sku (#6542)
 
 **Release sprint:** Sprint 89, 90, 91
 [ [bugs](https://github.com/Azure/azure-functions-host/issues?q=is%3Aissue+milestone%3A%22Functions+Sprint+89%22+label%3Abug+is%3Aclosed) | [features](https://github.com/Azure/azure-functions-host/issues?q=is%3Aissue+milestone%3A%22Functions+Sprint+89%22+label%3Afeature+is%3Aclosed) ]

src/WebJobs.Script/ScriptHostBuilderExtensions.cs

@@ -159,7 +159,7 @@ public static IHostBuilder AddScriptHostCore(this IHostBuilder builder, ScriptAp
                             // Including Core Tools as a warning during development time.
                             if (environment.IsWindowsConsumption() ||
                                 environment.IsLinuxConsumption() ||
-                                environment.IsWindowsElasticPremium() ||
+                                (environment.IsWindowsElasticPremium() && !environment.IsRuntimeScaleMonitoringEnabled()) ||
                                 environment.IsCoreTools())
                             {
                                 var validator = s.GetService<ExternalConfigurationStartupValidator>();