Import pkg_resources before launchpadlib.

Fixes bug 1001664. It's a hack, but it's not an evil hack.

Change-Id: I6d09cdecc5cae64a21cefad81c75ed1c02c4801c
diff --git a/update_gerrit_users.py b/update_gerrit_users.py
index 6816291..d078d00 100755
--- a/update_gerrit_users.py
+++ b/update_gerrit_users.py
@@ -23,6 +23,11 @@
 
 from datetime import datetime
 
+# There is a bug (810019) somewhere deep which causes pkg_resources
+# to bitch if it's imported after argparse. launchpadlib imports it,
+# so if we head it off at the pass, we can skip cronspam
+import pkg_resources
+
 import StringIO
 import ConfigParser
 import argparse