Added missing import time.

git-svn-id: http://munki.googlecode.com/svn/trunk@254 a4e17f2e-e282-11dd-95e1-755cbddbdd66

code/client/managedsoftwareupdate

@@ -23,6 +23,7 @@ import optparse
 import datetime
 import dateutil.parser
 import subprocess
+import time
 
 from munkilib import munkicommon
 from munkilib import updatecheck