Update setup.py

Author: mesmith75

setup.py

@@ -117,7 +117,7 @@ def run(self):
             'pytest-mock'],
         'profiler': ['memory_profiler'],
         'LHCb': ['LbDevTools'],
-        'Dirac': ['UltraDict']},
+        'Dirac': ['UltraDict','psutil']},
     classifiers=[
         'License :: OSI Approved :: GNU General Public License v2 (GPLv2)',
         'Programming Language :: Python :: 3.8',