pgsql: Allow publishing partition changes via ancestors

Allow publishing partition changes via ancestors

To control whether partition changes are replicated using their own
identity and schema or an ancestor's, add a new parameter that can be
set per publication named 'publish_via_partition_root'.

This allows replicating a partitioned table into a different partition
structure on the subscriber.

Author: Amit Langote <amitlangote09(at)gmail(dot)com>
Reviewed-by: Rafia Sabih <rafia(dot)pghackers(at)gmail(dot)com>
Reviewed-by: Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>
Reviewed-by: Petr Jelinek <petr(at)2ndquadrant(dot)com>
Discussion: https://www.postgresql.org/message-id/flat/CA+HiwqH=Y85vRK3mOdjEkqFK+E=ST=eQiHdpj43L=_eJMOOznQ(at)mail(dot)gmail(dot)com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/83fd4532a72179c370e318075a10e0e2aa832024

Modified Files
--------------
doc/src/sgml/catalogs.sgml | 10 +
doc/src/sgml/logical-replication.sgml | 12 +-
doc/src/sgml/ref/create_publication.sgml | 20 ++
src/backend/catalog/pg_publication.c | 70 +++----
src/backend/commands/publicationcmds.c | 95 +++++----
src/backend/replication/pgoutput/pgoutput.c | 223 +++++++++++++++++----
src/backend/utils/cache/relcache.c | 15 ++
src/bin/pg_dump/pg_dump.c | 24 ++-
src/bin/pg_dump/pg_dump.h | 1 +
src/bin/psql/describe.c | 17 +-
src/include/catalog/catversion.h | 2 +-
src/include/catalog/pg_publication.h | 5 +-
src/test/regress/expected/publication.out | 103 +++++-----
src/test/regress/sql/publication.sql | 3 +
src/test/subscription/t/013_partition.pl | 298 +++++++++++++++++++++++++++-
15 files changed, 724 insertions(+), 174 deletions(-)