[Azure Stack] Updates to Azs.Keyvault.Admin spec (#8974)

* Cumulative commit message:
commit 9e551f0
Author: bganapa <bganapa@microsoft.com>
Date:   Tue Nov 12 11:44:22 2019 -0800

    Reset to Stackadmin2 (#7766)

* Add autorest gen info to readme.md

specification/azsadmin/resource-manager/keyvault/readme.azsautogen.md

@@ -0,0 +1,9 @@
+# AutoRest v3 generators
+
+> see https://aka.ms/autorest
+
+``` yaml
+input-file:
+  - $(this-folder)/Microsoft.KeyVault.Admin/preview/2017-02-01-preview/KeyVault.json
+  - $(this-folder)/Microsoft.KeyVault.Admin/preview/2017-02-01-preview/Quotas.json
+```

specification/azsadmin/resource-manager/keyvault/readme.md

@@ -52,13 +52,14 @@ csharp:
   clear-output-folder: true
 ```
 
-## Multi-API/Profile support for AutoRest v3 generators 
+## Multi-API/Profile support for AutoRest v3 generators
 
 AutoRest V3 generators require the use of `--tag=all-api-versions` to select api files.
 
 This block is updated by an automatic script. Edits may be lost!
 
 ``` yaml $(tag) == 'all-api-versions' /* autogenerated */
+
 # include the azure profile definitions from the standard location
 require: $(this-folder)/../../../../profiles/readme.md
 
@@ -73,7 +74,6 @@ If there are files that should not be in the `all-api-versions` set,
 uncomment the  `exclude-file` section below and add the file paths.
 
 ``` yaml $(tag) == 'all-api-versions'
-#exclude-file: 
+#exclude-file:  
 #  - $(this-folder)/Microsoft.Example/stable/2010-01-01/somefile.json
 ```
-