Send time zone parameter

Author: Nemanja Mijatovic (E-Search)

src/Sql/Sql/ManagedInstance/Cmdlet/NewAzureSqlManagedInstance.cs

@@ -248,7 +248,8 @@ public override void ExecuteCmdlet()
                 SubnetId = this.SubnetId,
                 VCores = this.VCore,
                 Sku = Sku,
-                Collation = this.Collation
+                Collation = this.Collation,
+                TimezoneId = this.TimezoneId,
             });
             return newEntity;
         }