pgsql: Specify permutations for isolation tests with "invalid" permutat

Specify permutations for isolation tests with "invalid" permutations.

This is a necessary prerequisite for forthcoming changes to allow deadlock
scenarios to be tested by the isolation tester.  It is also a good idea on
general principle, since these scenarios add no useful test coverage not
provided by other scenarios, but do to take time to execute.

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/c9882c60f44cf5d0b37411535175a5c154fdad0e

Modified Files
--------------
src/test/isolation/expected/aborted-keyrevoke.out  |   60 -
.../isolation/expected/aborted-keyrevoke_2.out     |   60 -
src/test/isolation/expected/alter-table-1.out      | 1304 +++-----------------
src/test/isolation/expected/alter-table-2.out      |  551 ---------
src/test/isolation/expected/alter-table-3.out      |  258 ----
src/test/isolation/expected/create-trigger.out     |  110 --
.../isolation/expected/delete-abort-savept.out     |  132 --
src/test/isolation/expected/fk-deadlock.out        |   42 -
src/test/isolation/expected/fk-deadlock2.out       |   59 -
src/test/isolation/expected/fk-deadlock2_1.out     |   59 -
src/test/isolation/expected/fk-deadlock2_2.out     |   59 -
src/test/isolation/expected/fk-deadlock_1.out      |   42 -
src/test/isolation/specs/aborted-keyrevoke.spec    |   15 +
src/test/isolation/specs/alter-table-1.spec        |  138 +++
src/test/isolation/specs/alter-table-2.spec        |   49 +
src/test/isolation/specs/alter-table-3.spec        |   49 +
src/test/isolation/specs/create-trigger.spec       |   26 +
src/test/isolation/specs/delete-abort-savept.spec  |    8 +
src/test/isolation/specs/fk-deadlock.spec          |   15 +
src/test/isolation/specs/fk-deadlock2.spec         |   12 +
20 files changed, 515 insertions(+), 2533 deletions(-)