ISPN-4277 ISPN server is not able to laod login modules
ISPN-3911 HotRod authentication server integration fixes
- cleanly separate the secure and unsecure paths
- use an ANONYMOUS Subject in the secure path until a user has been authenticated
ISPN-4222 Add support for distributed entry iterator

* Added distribute entry retriever
* Added local entry retriever (used by repl, local and inval)