Add process-restartworker flag to nose

setup.cfg

@@ -8,8 +8,16 @@ exclude-dir=lms/envs
 # which shadows the xblock library (among other things)
 no-path-adjustment=1
 
+# When run in multi-process mode, give each process long enough
+# to complete running their batch of tests. Default is 10 seconds,
+# we bump it to 5 minutes.
 process-timeout=300
 
+# Restart each worker process once their tests are done, this helps control
+# memory leaks from killing the system. In multiprocess mode this restarts
+# the worker instead of letting it be rejoined with another test to execute.
+process-restartworker=1
+
 # Uncomment the following lines to open pdb when a test fails
 #nocapture=1
 #pdb=1