Fix not so random random passwords

If you run ipa_generate_password() multiple times, one
after the other, then you get the same password each time.

This is because it uses the current time to seed the
pseudo random number generator.

The easiest solution is to just use the default method
which seeds itself from /dev/urandom if available,
and uses a fractional time value otherwise.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>

diff -r 2f52fe548d87 ipa-python/ipautil.py
--- a/ipa-python/ipautil.py	Tue Jan 22 11:58:06 2008 +0000
+++ b/ipa-python/ipautil.py	Tue Jan 22 12:15:17 2008 +0000
@@ -24,8 +24,7 @@ import tempfile
 import tempfile
 import logging
 import subprocess
-from random import Random
-from time import gmtime
+import random
 import os, sys, traceback, readline
 import stat
 import shutil
@@ -364,8 +363,7 @@ def parse_generalized_time(timestr):
 
 def ipa_generate_password():
     rndpwd = ''
-    r = Random()
-    r.seed(gmtime())
+    r = random.Random()
     for x in range(12):
 #        rndpwd += chr(r.randint(32,126))
         rndpwd += chr(r.randint(65,90)) #stricter set for testing