Enable concurrency (but not randomization) in LMS unit tests

pavelib/utils/test/suites/nose_suite.py

@@ -128,7 +128,7 @@ class SystemTestSuite(NoseTestSuite):
         if self.processes is None:
             # Use one process per core for LMS tests, and no multiprocessing
             # otherwise.
-            self.processes = 0
+            self.processes = -1 if self.root == 'lms' else 0
 
         self.processes = int(self.processes)