Introduce Universal resource provider to fix ARM throttling issues (#23078)

extensions/machine-learning/src/test/stubs.ts

@@ -61,6 +61,9 @@ export class AzurecoreApiStub implements azurecore.IExtension {
 	provideResources(): azurecore.azureResource.IAzureResourceProvider[] {
 		throw new Error('Method not implemented.');
 	}
+	getUniversalProvider(): azurecore.azureResource.IAzureUniversalResourceProvider {
+		throw new Error('Method not implemented.');
+	}
 	onEncryptionKeysUpdated: any
 	getEncryptionKeys(): Promise<azurecore.CacheEncryptionKeys> {
 		throw new Error('Method not implemented.');