revert increase in PBKDF2 rounds to get baseline perf.

Author: rouilj

roundup/configuration.py

@@ -1086,7 +1086,7 @@ def str2value(self, value):
             "get the error 'Error: field larger than field limit' during\n"
             "import."),
         (IntegerNumberGeqZeroOption, 'password_pbkdf2_default_rounds',
-         '2000000',
+         '10000',
             "Sets the default number of rounds used when encoding passwords\n"
             "using the PBKDF2 scheme. Set this to a higher value on faster\n"
             "systems which want more security.\n"