[marketplace ordering] upcoming breaking change message (#19319)

* [MarketplaceOrdering] Added upcoming breaking change warning message to Get-AzMarketplaceTerms.

* [MarketplaceOrdering] update breakchange message.

* [MarketplaceOrdering] update breakchange message.

* Update ChangeLog.md

* Update ChangeLog.md

Co-authored-by: Dingmeng Xue <[email protected]>
Co-authored-by: Yeming Liu <[email protected]>

Author: 3 people

src/MarketplaceOrdering/MarketplaceOrdering/ChangeLog.md

@@ -18,6 +18,7 @@
         - Additional information about change #1
 -->
 ## Upcoming Release
+* Added a warning message for an upcoming breaking change to `Get-AzMarketplaceTerms`.
 
 ## Version 1.0.2
 * Update references in .psd1 to use relative path

src/MarketplaceOrdering/MarketplaceOrdering/Cmdlets/Agreements/GetAzureRmMarketplaceTerms.cs

@@ -17,9 +17,11 @@
 using Microsoft.Azure.Commands.MarketplaceOrdering.Models;
 using Microsoft.Azure.Management.MarketplaceOrdering;
 using Microsoft.Azure.Management.MarketplaceOrdering.Models;
+using Microsoft.WindowsAzure.Commands.Common.CustomAttributes;
 
 namespace Microsoft.Azure.Commands.MarketplaceOrdering.Cmdlets.Agreements
 {
+    [GenericBreakingChange("Cmdlet will call GET /subscriptions/{subscriptionId}/providers/Microsoft.MarketplaceOrdering/offerTypes/{offerType}/publishers/{publisherId}/offers/{offerId}/plans/{planId}/agreements/current by default in an upcoming breaking change release.")]
     [Cmdlet("Get", ResourceManager.Common.AzureRMConstants.AzureRMPrefix + "MarketplaceTerms", DefaultParameterSetName = Constants.ParameterSetNames.AgreementAcceptParameterSet), OutputType(typeof(PSAgreementTerms))]
     public class GetAzureRmMarketplaceTerms : AzureMarketplaceOrderingCmdletBase
     {