Allow password policy changes to take effect without server restart.

When password policy changes are made these do not take effect until the server is restarted.
We are working on a UI that allows the creation and assignment of password policies. This would depend on having the running policy data updated when there are changes. I realize this could be a fair bit of work. If an interim solution would be to call some method that would refresh the running policies in memory, we could add code to support this. Thanks.