pgsql: Add alternative output for ON CONFLICT toast isolation test.

Add alternative output for ON CONFLICT toast isolation test.

On some buildfarm animals the isolationtest added in 07ef0351 failed, as
the order in which processes are run after unlocking is not
guaranteed. Add an alternative output for that.

Discussion: <7969.1471484738@sss.pgh.pa.us>
Backpatch: 9.6, like the test in the aforementioned commit

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/9595383bc6fc24d25970374e2eddd5ce6f977f9e

Modified Files
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src/test/isolation/expected/insert-conflict-toast_1.out | 15 +++++++++++++++
1 file changed, 15 insertions(+)