Improve ikfast QUIET handling

[rhaschke]

Write stdout+stderr to an intermediate log file which is shown on failure.

[codecov]

Codecov Report

Merging #2685 (150ffb1) into master (d53e02a) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2685   +/-   ##
=======================================
  Coverage   60.56%   60.56%           
=======================================
  Files         402      402           
  Lines       29601    29601           
=======================================
  Hits        17926    17926           
  Misses      11675    11675           

Impacted Files	Coverage Δ
...meterization/work_space/pose_model_state_space.cpp	82.06% <0.00%> (-1.28%)	⬇️
...e/collision_detection_fcl/src/collision_common.cpp	78.61% <0.00%> (+0.26%)	⬆️
...raint_samplers/src/default_constraint_samplers.cpp	84.22% <0.00%> (+0.33%)	⬆️

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