Make testing less verbose.

Closed Nick Thompson requested to merge (removed):less_verbose_tests into master

In a previous commit, one disk failed after running out of space. In addition, finding incorrect unit tests is currently quite difficult, as lots of extraneous std::cout statements clutter the logs.

With this diff, I measure

build git:(less_verbose_tests) ✗$ time ctest -V | wc -c
ctest -V  203.41s user 9.84s system 97% cpu 3:38.99 total
build git:(master) ✗ time ctest -V | wc -c
ctest -V  200.24s user 11.75s system 79% cpu 4:26.38 total
Edited by Nick Thompson

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