COMP: Precision issues

The original test was failing on one platform: AIX.
Change the test to have coordinates that can be represented exactly in
IEEE FP.
See if this helps.

Change-Id: Ibf6d5472e9c3b42cc858cfe92ea5c415085ff716
Merge topic 'TestIntersectionPolyDataFilterPrecision' into master

5fd5b667 COMP: Precision issues