add go sdk config (#13620)

Author: njuCZ

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

@@ -13,9 +13,20 @@ go:
 
 ```yaml $(go) && $(multiapi)
 batch:
+  - tag: package-2021-04-01
   - tag: package-2020-04-01-preview
 ```
 
+
+### Tag: package-2021-04-01 and go
+
+These settings apply only when `--tag=package-2021-04-01 --go` is specified on the command line.
+Please also specify `--go-sdks-folder=<path to the root directory of your azure-sdk-for-go clone>`.
+
+```yaml $(tag) == 'package-2021-04-01' && $(go)
+output-folder: $(go-sdk-folder)/services/$(namespace)/mgmt/2021-04-01/$(namespace)
+```
+
 ### Tag: package-2020-04-01-preview and go
 
 These settings apply only when `--tag=package-2020-04-01-preview --go` is specified on the command line.

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

@@ -31,6 +31,7 @@ directive:
 
 ```yaml $(go) && $(multiapi)
 batch:
+  - tag: package-2021-03-01
   - tag: package-2020-12-01
   - tag: package-2020-10-01-preview
   - tag: profile-hybrid-2020-09-01
@@ -54,6 +55,16 @@ batch:
   - tag: package-container-service-2015-11-preview
 ```
 
+### Tag: package-2021-03-01 and go
+
+These settings apply only when `--tag=package-2021-03-01 --go` is specified on the command line.
+Please also specify `--go-sdk-folder=<path to the root directory of your azure-sdk-for-go clone>`.
+
+```yaml $(tag)=='package-2021-03-01' && $(go)
+namespace: compute
+output-folder: $(go-sdk-folder)/services/$(namespace)/mgmt/2021-03-01/$(namespace)
+```
+
 ### Tag: package-2020-12-01 and go
 
 These settings apply only when `--tag=package-2020-12-01 --go` is specified on the command line.

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

@@ -12,6 +12,7 @@ go:
 
 ```yaml $(go) && $(multiapi)
 batch:
+  - tag: package-2021-03-15-preview
   - tag: package-2020-07-15-privatepreview
 ```