pgsql: Include partitioned indexes to system view pg_indexes

Include partitioned indexes to system view pg_indexes

pg_tables already includes partitioned tables, so for consistency
pg_indexes should show partitioned indexes.

Author: Suraj Kharage
Reviewed-by: Amit Langote, Michael Paquier
Discussion: https://postgr.es/m/CAF1DzPVrYo4XNTEnc=PqVp6aLJc7LFYpYR4rX=_5pV=wJ2KdZg@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/f94cec64476f2752e91b10d7928a2fcd105e9fc3

Modified Files
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src/backend/catalog/system_views.sql   | 2 +-
src/include/catalog/catversion.h       | 2 +-
src/test/regress/expected/indexing.out | 7 +++++++
src/test/regress/expected/rules.out    | 2 +-
src/test/regress/sql/indexing.sql      | 3 +++
5 files changed, 13 insertions(+), 3 deletions(-)