Make psutil features of our fedmsg config optional for mod_wsgi on rhel7.

roles/fedmsg/base/templates/logging.py.j2

@@ -4,10 +4,18 @@
 import inspect
 import logging
 import os
-import psutil
 import socket
 import traceback
 
+psutil = None
+try:
+    import psutil
+except OSError:
+    # We run into issues when trying to import psutil from inside mod_wsgi on
+    # rhel7.  If we hit that here, then just fail quietly.
+    # https://github.com/jmflinuxtx/kerneltest-harness/pull/17#issuecomment-48007837
+    pass
+
 
 class ContextInjector(logging.Filter):
     """ Logging filter that adds context to log records.
@@ -57,6 +65,10 @@ class ContextInjector(logging.Filter):
     @staticmethod
     def get_current_process():
         mypid = os.getpid()
+
+        if not psutil:
+            raise OSError("Could not import psutil for %r" % mypid)
+
         for proc in psutil.process_iter():
             if proc.pid == mypid:
                 return proc