pgsql: Report progress of ANALYZE commands

Report progress of ANALYZE commands

This uses the progress reporting infrastructure added by c16dc1aca5e0,
adding support for ANALYZE.

Co-authored-by: Álvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>
Co-authored-by: Tatsuro Yamada <tatsuro(dot)yamada(dot)tf(at)nttcom(dot)co(dot)jp>
Reviewed-by: Julien Rouhaud, Robert Haas, Anthony Nowocien, Kyotaro Horiguchi,
Vignesh C, Amit Langote

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/a166d408eb0b35023c169e765f4664c3b114b52e

Modified Files
--------------
doc/src/sgml/monitoring.sgml | 188 +++++++++++++++++++++++++++++++-
src/backend/catalog/system_views.sql | 21 ++++
src/backend/commands/analyze.c | 33 +++++-
src/backend/statistics/extended_stats.c | 23 ++++
src/backend/utils/adt/pgstatfuncs.c | 2 +
src/backend/utils/misc/sampling.c | 6 +-
src/include/catalog/catversion.h | 2 +-
src/include/commands/progress.h | 17 +++
src/include/pgstat.h | 1 +
src/include/utils/sampling.h | 4 +-
src/test/regress/expected/rules.out | 22 ++++
11 files changed, 311 insertions(+), 8 deletions(-)