Convert pvpython tests to ExternalData

Change-Id: Id3ba1cc6cbfe5e565f719d4631f9a38c00a25714
Update CoProcessing tests to use ExternalData

Change-Id: I14df8fcb7a58caa5aeed070d3c403506a351d58f
Update PythonCatalyst tests to use ExternalData

Change-Id: I85c9a3894c7febb45195cdcfa9ad657ddcb75ff2
Update ClientServerCore tests to use ExternalData

Change-Id: I639ca86ca3776bb6c11a0e5b02ddd4f461bf07cb
Update ClientServerStream tests to use ExternalData

Change-Id: I91d6d89562fa66d43562b9c00f8415c45d5ee0df
Update PVCommon tests to use ExternalData

Change-Id: I5d9270411b3ddc7b858fcf7780bca870e27840e5
Update ServerImplementation tests to use ExternalData

Change-Id: I2d85f9f5f82fad6b3f76d25e99a97823348d5884
Update ServerManager C++ tests to use ExternalData

Change-Id: I2dbee689363af8dce771a45cdd97cd72f4bfb793
Update ServerManager Python tests to use ExternalData

Change-Id: I2c0567cafce920272a8b0c5e19f963414009c307
Update PVRendering tests to use ExternalData

Change-Id: I729a4ed83f715b70fb26900789de17e840c79b92
Update ServerManagerWeb tests to use ExternalData

Change-Id: I17b590c68687a787399820ba3c6f52d612a78fd8
Update VTKExtensions tests to use ExternalData

Change-Id: I12a35a26a6dedc4a64c3d9b6dc14b6faa1c3a573
Update SciberQuestToolKit tests to use ExternalData

Change-Id: Ia4dac5d8503a116aadbdca248927932636ee0513
Use a variable for all test output paths

Change-Id: I88ffea098405a9ff29a421e1d03d4997622df643
Only add tests if the required targets exist

Change-Id: Id533d1074c97d687f322b70126621d37bff559da
Update MantaView tests to use ExternalData

Change-Id: I46e1d0b8ff9deca6229166c07fe9a469a1aa404b
Update SurfaceLIC tests to use ExternalData

Change-Id: I61052f761061764b5376266b63276183ae2cfc2e
Update QtCore tests to use ExternalData

Change-Id: I5cd356b18c3e2c05f615981d6553f185274e95e8
Remove some unnecessary endif() arguments

Change-Id: Ic25641c621dde354bc7c0335eff0ed4d70bbd036
Connect the correct signal in the Exodus panel

Change-Id: I0af6dd5561db6929f196d1a8828a8e25cfa007dc