[pgpool-committers: 5097] pgpool: Add regression test for SSL connection.

[Tatsuo Ishii]

Add regression test for SSL connection.

This tests SSL connection between frontend <--> Pgpool-II and
Pgpool-II <--> backend.

Branch
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V3_4_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=b8d4b6caab9ef00fde8dbee5f521280e0622eabf

Modified Files
--------------
.../regression/tests/023.ssl_connection/README     |  6 ++
.../regression/tests/023.ssl_connection/server.crt | 79 +++++++++++++++++++++
.../regression/tests/023.ssl_connection/server.key | 27 ++++++++
.../regression/tests/023.ssl_connection/server.req | 61 ++++++++++++++++
.../regression/tests/023.ssl_connection/test.sh    | 81 ++++++++++++++++++++++
5 files changed, 254 insertions(+)