Move Azure.ResourceManager.Resources Tenants objects to Azure.ResourceManager,Core

sdk/resourcemanager/Azure.ResourceManager.Core/src/ArmClient.cs

@@ -162,6 +162,15 @@ public GenericResourceOperations GetGenericResourcesOperations(TenantResourceIde
             return new GenericResourceOperations(new ClientContext(ClientOptions, Credential, BaseUri, Pipeline), id);
         }
 
+        /// <summary>
+        /// Gets the tenants.
+        /// </summary>
+        /// <returns> Tenant container. </returns>
+        public TenantContainer GetTenants()
+        {
+            return new TenantContainer(new ClientContext(ClientOptions, Credential, BaseUri, Pipeline));
+        }
+
         /// <summary>
         /// Creates a container using the lambda expression passed in.
         /// </summary>