track2 modify iothub readme.go.md (#15743)

* track2 modify iothub readme.go.md

* add repo azure-sdk-for-go-track2

Author: Alancere

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

@@ -2,13 +2,21 @@
 
 These settings apply only when `--go` is specified on the command line.
 
-``` yaml $(go)
+``` yaml $(go) && !$(track2)
 go:
   license-header: MICROSOFT_MIT_NO_VERSION
   namespace: devices
   clear-output-folder: true
 ```
 
+``` yaml $(go) && $(track2)
+license-header: MICROSOFT_MIT_NO_VERSION
+module-name: sdk/iothub/armiothub
+module: github.com/Azure/azure-sdk-for-go/$(module-name)
+output-folder: $(go-sdk-folder)/$(module-name)
+azure-arm: true
+```
+
 ### Go multi-api
 
 ``` yaml $(go) && $(multiapi)

specification/iothub/resource-manager/readme.md

@@ -252,6 +252,7 @@ swagger-to-sdk:
   - repo: azure-sdk-for-net-track2
   - repo: azure-sdk-for-java
   - repo: azure-sdk-for-go
+  - repo: azure-sdk-for-go-track2
   - repo: azure-sdk-for-js
   - repo: azure-sdk-for-node
   - repo: azure-sdk-for-ruby