Partitioning versus autovacuum

So we now support `ANALYZE partitioned_table` which will gather statistics
for the main table by gathering stats from all the partitions.

However as far as I can tell autovacuum will never actually trigger this
analyze. Because we never generate any update records for the parent table
in the statistics. Have I missed something?

I didn't find any discussion of this in the threads from when partitioning
was committed but there were a lot of discussions and I could easily have
missed it.

Is there a story for this? Some way to configure things so that autovacuum
will analyze partitioned tables?

Or should we look at doing something? Maybe whether we analyze a child we
should also update the parent -- and if there's no stats yet run analyze on
it?

This may be a serious enough problem for users that it may warrant
backpatching. Not having any stats is resulting in some pretty weird plans
for us.