client.mangle_suspend test failing on cdash machine

This CDash machine didn't run over the weekend so this is the first time it ran this new mangle_suspend test, I believe.

debug-internal-64 hung and timed out it looks like:

Exit Value	9
Fail Reason	Required regular expression not found.Regex=[^Test 1 finished
Test 2 finished
$
]

Test output
Test 1 finished