UP-4200 Decrypt password for portlets when replaying credentials

https://issues.jasig.org/browse/UP-4200

Only applies when using local login form to authenticate against DB or LDAP.
I can't remember using cachedPasswordUserInfoService with anything besides CAS (clearpass) or LDAP... and I'm not aware of any portlet that normally expects to decrypt a password passed to it in the USER_INFO map.  Are you implying that there's a mismatch between the default config for this bean and the way portlets normally expect the password?  (The ones that use it, at least.)

If so, then yes -- I think we should change it.