package-templatespecs-2021-03-preview tag added (python) (#13958)

* Added tag

* nit: ordering

Co-authored-by: Dania Etienne <[email protected]>

Author: detienne20

specification/resources/resource-manager/readme.python.md

@@ -59,6 +59,7 @@ batch:
   - tag: package-deploymentscripts-2020-10
   - tag: package-deploymentscripts-2019-10-preview
   - multiapiscript-deploymentscripts: true
+  - tag: package-templatespecs-2021-03-preview
   - tag: package-templatespecs-2019-06-preview
   - multiapiscript-templatespecs: true
 ```
@@ -477,3 +478,16 @@ Please also specify `--python-sdks-folder=<path to the root directory of your az
 namespace: azure.mgmt.resource.templatespecs.v2019_06_01_preview
 output-folder: $(python-sdks-folder)/resources/azure-mgmt-resource/azure/mgmt/resource/templatespecs/v2019_06_01_preview
 ```
+
+### Tag: package-templatespecs-2021-03-preview and python
+
+These settings apply only when `--tag=package-templatespecs-2021-03-preview` is specified on the command line.
+Please also specify `--python-sdks-folder=<path to the root directory of your azure-sdk-for-python clone>`.
+
+``` yaml $(tag) == 'package-templatespecs-2021-03-preview'
+namespace: azure.mgmt.resource.templatespecs.v2021_03_01_preview
+output-folder: $(python-sdks-folder)/resources/azure-mgmt-resource/azure/mgmt/resource/templatespecs/v2021_03_01_preview
+python:
+  namespace: azure.mgmt.resource.templatespecs.v2021_03_01_preview
+  output-folder: $(python-sdks-folder)/resources/azure-mgmt-resource/azure/mgmt/resource/templatespecs/v2021_03_01_preview
+```