Update default operation launcher to use a thread pool

13 jobs for default-launcher-thread-pool
Status Job ID Name Coverage
  External
passed cdash

passed ghostflow-branch-check-master

failed smtk@master-kerbin-windows-shared-release+examples+remus

00:02:24

failed smtk@master-moho-linux-shared-relwithdebinfo+examples+private+remus

00:04:41

failed smtk@master-moho-linux-shared-relwithdebinfo+examples+python3+remus+vtk

00:00:04

failed smtk@master-moho-linux-shared-relwithdebinfo+examples+remus

00:04:39

failed smtk@master-moho-linux-shared-relwithdebinfo+examples+remus+vtk

00:04:42

passed smtk@master-norkit-osx-shared-release+examples+matplotlib

00:02:26

failed smtk@master-praxis-windows-shared-release

00:02:47

failed smtk@master-talosiv-osx-shared-release+examples+matplotlib

00:16:19

failed smtk@master-tatooine-osx-shared-release+examples+matplotlib

00:02:29

failed smtk@master-tatooine-osx-shared-release+examples+matplotlib+private

00:02:57

passed cdash