track2 add PostgreSQL in readme.go.md (#15552)

* track2 add PostgreSQL in readme.go.md

* fix

* fix

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

@@ -2,12 +2,28 @@
 
 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) && $(package-singleservers)
+license-header: MICROSOFT_MIT_NO_VERSION
+module-name: sdk/postgresql/armpostgresql
+module: github.com/Azure/azure-sdk-for-go/$(module-name)
+output-folder: $(go-sdk-folder)/$(module-name)
+azure-arm: true
+```
+
+``` yaml $(go) && $(track2) && $(package-flexibleservers)
+license-header: MICROSOFT_MIT_NO_VERSION
+module-name: sdk/postgresql/armpostgresqlflexibleservers
+module: github.com/Azure/azure-sdk-for-go/$(module-name)
+output-folder: $(go-sdk-folder)/$(module-name)
+azure-arm: true
+```
+
 ### Go multi-api
 
 ``` yaml $(go) && $(multiapi)