CodeGen from PR 15958 in Azure/azure-rest-api-specs

[Hub Generated] Review request for Microsoft.Consumption to add version stable/2021-10-01 (#15958)

* Adds base for updating Microsoft.Consumption from version stable/2021-05-01 to version 2021-10-01

* Updates readme

* Updates API version in new specs and examples

* added benefitid and benefitname

* adding descr for benefitid and benefitname

* Deprecate Forecasts

* added provider in modern

* Adding description for the provider

* 1) removed BenefitId and BenefitName from legacy 2) chnaged value of Publishertype fro 1pp to Microsoft 3) updated examples with ReservationName and BenefitId and BeneftName for modern

* Make changes based on s360

* Fix example errors

* Missed an instance of purchaseDate type

* No schema for 204

* No schema for 204

* No schema for 204

* Ran prettier

* Add changes to 10.01.21

* Ran prettier

* Revert "Ran prettier"

This reverts commit 1a0fbfe4a2b0583a3db0b4f985a5857925763958.

* Revert "No schema for 204"

This reverts commit 181f6c5af6add248619fbb558f59e7bb3820075d.

* Revert "Missed an instance of purchaseDate type"

This reverts commit d77898dcf5ec20620a84e5ec51bcb1b93df54d82.

* Revert "Fix example errors"

This reverts commit 06be042e08acb88232b46d80b77bdf4dad48dde1.

* Revert "Make changes based on s360"

This reverts commit 0960cc2078504e76328811f9eb9f5be1a25e1f2d.

* Manually change 2021-05-01

* removing reservationName

* costAllocationRule

* Adding missing fields

* Operation scopeReservationRecommendationDetails had two params with the same name scope, so fixing it.

* chnaging the casing for eTag

* chnaging the casing for eTag

* reservation api

* Arm feedback - add enum to PricingModel

* pretty check

* linter check

* pretty check

Co-authored-by: Mita Garg <v-migarg@microsoft.com>
Co-authored-by: Alex Goldschmidt <algoldsc@microsoft.com>

Author: 3 people

schemas/2018-05-01/subscriptionDeploymentTemplate.json

@@ -770,6 +770,9 @@
             {
               "$ref": "https://schema.management.azure.com/schemas/2021-05-01/Microsoft.Consumption.json#/unknown_resourceDefinitions/budgets"
             },
+            {
+              "$ref": "https://schema.management.azure.com/schemas/2021-10-01/Microsoft.Consumption.json#/unknown_resourceDefinitions/budgets"
+            },
             {
               "$ref": "https://schema.management.azure.com/schemas/2020-02-01-preview/Microsoft.Datadog.json#/subscription_resourceDefinitions/agreements"
             },