pgsql: Save Kerberos and LDAP daemon logs where the buildfarm can find

Save Kerberos and LDAP daemon logs where the buildfarm can find them.

src/test/kerberos and src/test/ldap try to run private authentication
servers, which of course might fail. The logs from these servers
were being dropped into the tmp_check/ subdirectory, but they should
be put in tmp_check/log/, because the buildfarm will only capture
log files in that subdirectory. Without the log output there's
little hope of diagnosing buildfarm failures related to these servers.

Backpatch to v11 where these test suites were added.

Discussion: https://postgr.es/m/16017.1565047605@sss.pgh.pa.us

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/4ecd05cb771313d8e4d4007ec02408e5f18de5d2

Modified Files
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src/test/kerberos/t/001_auth.pl | 4 ++--
src/test/ldap/t/001_auth.pl | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)