pgsql: Use existing SSL certs in LDAP tests instead of generating them

Use existing SSL certs in LDAP tests instead of generating them

The SSL test suite has a bunch of pre-existing certificates, so it's
better simply to use what we already have than generate new certificates
each time the LDAP tests are run.

Discussion: /messages/by-id/bc305c7a-f390-44f2-2e82-9bcaec6108da@dunslane.net

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/f03bd5717eaf31569ca797a2f7d65608f88ac2a2

Modified Files
--------------
src/test/ldap/Makefile | 1 -
src/test/ldap/meson.build | 1 -
src/test/ldap/t/001_auth.pl | 19 ++++++++-----------
src/test/ssl/README | 5 +++++
4 files changed, 13 insertions(+), 13 deletions(-)