pgsql: tap tests: replace 'master' with 'primary'.

tap tests: replace 'master' with 'primary'.

We've largely replaced master with primary in docs etc, but tap test
still widely used master.

Author: Andres Freund
Reviewed-By: David Steele
Discussion: https://postgr.es/m/20200615182235.x7lch5n6kcjq4aue@alap3.anarazel.de

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/229f8c219f8fffacc253eca6023eab10a16eb009

Modified Files
--------------
contrib/bloom/t/001_wal.pl                         |  40 ++--
src/bin/pg_rewind/t/001_basic.pl                   |  76 +++----
src/bin/pg_rewind/t/002_databases.pl               |  24 +--
src/bin/pg_rewind/t/003_extrafiles.pl              |  54 ++---
src/bin/pg_rewind/t/004_pg_xlog_symlink.pl         |  40 ++--
src/bin/pg_rewind/t/005_same_timeline.pl           |   2 +-
src/bin/pg_rewind/t/RewindTest.pm                  | 134 ++++++-------
src/bin/pg_verifybackup/t/002_algorithm.pl         |  14 +-
src/bin/pg_verifybackup/t/003_corruption.pl        |  12 +-
src/bin/pg_verifybackup/t/004_options.pl           |  10 +-
src/bin/pg_verifybackup/t/006_encoding.pl          |  10 +-
src/bin/pg_verifybackup/t/007_wal.pl               |  12 +-
src/test/authentication/t/001_password.pl          |   4 +-
src/test/authentication/t/002_saslprep.pl          |   4 +-
src/test/modules/commit_ts/t/002_standby.pl        |  40 ++--
src/test/modules/commit_ts/t/003_standby_2.pl      |  36 ++--
src/test/modules/commit_ts/t/004_restart.pl        |  64 +++---
.../test_misc/t/001_constraint_validation.pl       |   2 +-
src/test/perl/PostgresNode.pm                      |  14 +-
src/test/perl/README                               |   2 +-
src/test/recovery/t/001_stream_rep.pl              | 130 ++++++------
src/test/recovery/t/002_archiving.pl               |  26 +--
src/test/recovery/t/003_recovery_targets.pl        |  60 +++---
src/test/recovery/t/004_timeline_switch.pl         |  26 +--
src/test/recovery/t/005_replay_delay.pl            |  28 +--
src/test/recovery/t/006_logical_decoding.pl        |  78 ++++----
src/test/recovery/t/007_sync_rep.pl                |  70 +++----
src/test/recovery/t/008_fsm_truncation.pl          |  30 +--
src/test/recovery/t/009_twophase.pl                | 222 ++++++++++-----------
.../recovery/t/010_logical_decoding_timelines.pl   |  64 +++---
src/test/recovery/t/011_crash_recovery.pl          |   2 +-
src/test/recovery/t/012_subtransactions.pl         |  84 ++++----
src/test/recovery/t/013_crash_restart.pl           |   2 +-
src/test/recovery/t/019_replslot_limit.pl          | 132 ++++++------
src/test/recovery/t/020_archive_status.pl          |   2 +-
src/test/ssl/t/001_ssltests.pl                     |   2 +-
src/test/ssl/t/002_scram.pl                        |   2 +-
37 files changed, 777 insertions(+), 777 deletions(-)