Add swiftbrowser as an associated project

Swiftbrowser is a simple web app build with Django to access Openstack Swift.

Change-Id: I2d397f61e4c3fcd09ba994a06ec4d492f37ae34a
Preserve tracebacks from run_in_thread

Now the traceback goes all the way down to where the exception came
from, not just down to run_in_thread. Better for debugging.

Change-Id: Iac6acb843a6ecf51ea2672a563d80fa43d731f23
Allow specify arguments to .probetests script

Just so at least I can add -x or -s.

Change-Id: I95543a3086ca5fb292e7899c02646a58296c610a
Merge "Add swiftbrowser as an associated project"
Merge "Allow specify arguments to .probetests script"
Merge "Preserve tracebacks from run_in_thread"