pgsql: Bump up timeout delays some more in timeouts isolation test.

Bump up timeout delays some more in timeouts isolation test.

The buildfarm members using -DCLOBBER_CACHE_ALWAYS still don't like this
test. Some experimentation shows that on my machine, isolationtester's
query to check for "waiting" state takes 2 to 2.5 seconds to bind+execute
under -DCLOBBER_CACHE_ALWAYS. Set the timeouts to 5 seconds to leave some
headroom for possibly-slower buildfarm critters.

Really we ought to fix the "waiting" query, which is not only horridly
slow but outright wrong in detail; and then maybe we can back off these
timeouts. But right now I'm just trying to get the buildfarm green again.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/a7921f71a3c747141344d8604f6a6d7b4cddb2a9

Modified Files
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src/test/isolation/expected/timeouts.out | 16 ++++++++--------
src/test/isolation/specs/timeouts.spec | 8 ++++----
2 files changed, 12 insertions(+), 12 deletions(-)