pgsql: Fail if recovery target is not reached

Fail if recovery target is not reached

Before, if a recovery target is configured, but the archive ended
before the target was reached, recovery would end and the server would
promote without further notice. That was deemed to be pretty wrong.
With this change, if the recovery target is not reached, it is a fatal
error.

Based-on-patch-by: Leif Gunnar Erlandsen <leif(at)lako(dot)no>
Reviewed-by: Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>
Discussion: https://www.postgresql.org/message-id/flat/993736dd3f1713ec1f63fc3b653839f5(at)lako(dot)no

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/dc788668bb269b10a108e87d14fefd1b9301b793

Modified Files
--------------
doc/src/sgml/config.sgml | 5 +++++
src/backend/access/transam/xlog.c | 19 +++++++++++++----
src/test/perl/PostgresNode.pm | 33 ++++++++++++++++++++++++++---
src/test/recovery/t/003_recovery_targets.pl | 24 ++++++++++++++++++++-
4 files changed, 73 insertions(+), 8 deletions(-)