Let tests run on Jenkins for longer

Let tests run up to 2 hours and have a 5 minute timeout for individual tests.

devtools/ci/jenkins/install.sh

@@ -36,7 +36,7 @@ make PythonInstall
 # Now run the tests
 python -m simtk.testInstallation
 cd python/tests && py.test -v && cd ../..
-python devtools/run-ctest.py --start-time $(date +%s)
+python devtools/run-ctest.py --job-duration=120 --timeout 300
 
 # Now remove the conda environment
 source deactivate