TT#129162 api-rest subscriber get2put ignore field webpassword

* 'webpassword' field is changed on every PUT, because the salted hash
  is recalculated, even if it is the same plain text password that
  is provided in the PUT, therefore api-rest cannot compare the
  'webpassword' field obtained on GET with the one that is obtained
  after PUT

Change-Id: I7d5108c57bd7ab1b5a59c247836d1357317aaa32

t/api-rest/api-subscribers.t

@@ -73,7 +73,7 @@ $fake_data->set_data_from_script({
                 $_[0]->{primary_number}->{sn} = $time.$num;
             }, $self->data->{$collection_name}->{data} );
         },
-        'update_change_fields' => [qw/modify_timestamp create_timestamp primary_number_id/],
+        'update_change_fields' => [qw/modify_timestamp create_timestamp primary_number_id webpassword/],
     },
 });