Update pkg descriptions for azure-servicebus to include pointer to ne…

…w package (#20678)

This PR updates the package description for azure-servicebus package to include pointer to the new package and the migration guide

As discussed offline, this is in an attempt to guide users to the new package where there is active development while the above packages continue to get critical bug fixes

eng/spotbugs-aggregate-report/pom.xml

@@ -140,7 +140,7 @@
         <dependency>
           <groupId>com.microsoft.azure</groupId>
           <artifactId>azure-servicebus</artifactId>
-          <version>3.7.0-beta.1</version> <!-- {x-version-update;com.microsoft.azure:azure-servicebus;current} -->
+          <version>3.6.3</version> <!-- {x-version-update;com.microsoft.azure:azure-servicebus;current} -->
         </dependency>
       </dependencies>
       <properties>

eng/versioning/version_data.txt

@@ -34,7 +34,7 @@ com.microsoft.azure:azure-keyvault-cryptography;1.2.4;1.3.0-beta.1
 com.microsoft.azure:azure-keyvault-extensions;1.2.4;1.3.0-beta.1
 com.microsoft.azure:azure-keyvault-test;1.2.3;1.2.4
 com.microsoft.azure:azure-keyvault-webkey;1.2.4;1.3.0-beta.1
-com.microsoft.azure:azure-servicebus;3.6.2;3.7.0-beta.1
+com.microsoft.azure:azure-servicebus;3.6.2;3.6.3
 com.microsoft.azure:azure-storage-blob;11.0.2;11.0.2
 com.microsoft.azure.msi_auth_token_provider:azure-authentication-msi-token-provider;1.1.0-beta.1;1.1.0-beta.1
 com.microsoft.azure:azure-eventgrid;1.4.0-beta.1;1.4.0-beta.1

sdk/servicebus/microsoft-azure-servicebus/README.md

@@ -4,7 +4,9 @@
 
 # Microsoft Azure Service Bus Client for Java
 
-This is the next generation Service Bus Java client library that focuses on Queues & Topics. If you are looking for Event Hubs and Relay clients, follow the below links:
+> Please note, a newer package [com.azure:azure-messaging-servicebus](https://search.maven.org/artifact/com.azure/azure-messaging-servicebus) for [Azure Service Bus](https://azure.microsoft.com/services/service-bus/) is available as of December 2020. While this package will continue to receive critical bug fixes, we strongly encourage you to upgrade. Read the [migration guide](https://aka.ms/azsdk/java/migrate/sb) for more details.
+
+This is the Java client library for Azure Service Bus that focuses on Queues & Topics. If you are looking for Event Hubs and Relay clients, follow the below links:
 * [Event Hubs](https://github.com/Azure/azure-sdk-for-java/tree/master/sdk/eventhubs/microsoft-azure-eventhubs)
 * [Relay](https://github.com/azure/azure-relay-dotnet)
 
@@ -19,7 +21,7 @@ The package can be downloaded from [Maven](https://search.maven.org/artifact/com
 <dependency>
   <groupId>com.microsoft.azure</groupId>
   <artifactId>azure-servicebus</artifactId>
-  <version>3.6.2</version>
+  <version>3.6.3</version>
 </dependency>
 ```
 [//]: # ({x-version-update-end})

sdk/servicebus/microsoft-azure-servicebus/pom.xml

@@ -6,10 +6,10 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.microsoft.azure</groupId>
   <artifactId>azure-servicebus</artifactId>
-  <version>3.7.0-beta.1</version> <!-- {x-version-update;com.microsoft.azure:azure-servicebus;current} -->
+  <version>3.6.3</version> <!-- {x-version-update;com.microsoft.azure:azure-servicebus;current} -->
 
   <name>Microsoft Azure SDK for Service Bus</name>
-  <description>Java library for Azure Service Bus</description>
+  <description>Java library for Azure Service Bus. Please note, a newer package com.azure:azure-messaging-servicebus for Azure Service Bus is available as of December 2020. While this package will continue to receive critical bug fixes, we strongly encourage you to upgrade. Read the migration guide at https://aka.ms/azsdk/java/migrate/sb for more details.</description>
   <url>https://github.com/Azure/azure-sdk-for-java</url>
 
   <parent>