introduce track 2 configurations for containerservice (#14587)

Author: ArcturusZhang

specification/containerservice/resource-manager/readme.go.md

@@ -2,12 +2,20 @@
 
 These settings apply only when `--go` is specified on the command line.
 
-``` yaml $(go)
+``` yaml $(go) && !$(track2)
 go:
   license-header: MICROSOFT_MIT_NO_VERSION
   clear-output-folder: true
 ```
 
+``` yaml $(go) && $(track2)
+license-header: MICROSOFT_MIT_NO_VERSION
+module-name: sdk/containerservice/armcontainerservice
+module: github.com/Azure/azure-sdk-for-go/$(module-name)
+output-folder: $(go-sdk-folder)/$(module-name)
+azure-arm: true
+```
+
 ### Go multi-api
 
 ``` yaml $(go) && $(multiapi)