LDAPReplicationDomain.java:
Replaced instance fields with directly storing and using the ReplicationDomainCfg object.

ReplicationBroker.java:
Replaced instance fields with directly storing and using the ReplicationDomainCfg object.
Removed start(Set<String>), setChangeTimeHeartbeatInterval() (now useless), and setGroupId() (never used).
Added getBaseDN(), getReplicationServerUrls(), getGroupId().
In several methods, used Map.entrySet() instead of Map.keySet() with Map.get(Object)  + renamed replicationServerInfo to rsInfo.

replication.properties:
Removed now unused message.


ReplicationDomain.java:
Replaced instance fields with directly storing and using the ReplicationDomainCfg object.
Code cleanups:
- Removed useless use of "this." for method calls.
- In processErrorMsg() and processUpdateDone(), collapsed if statements
- Increased vertical density
- Extracted method getGenId()
- In waitForAckIfAssuredEnabled(), used early exit.


DomainFakeCfg.java:
Comments => javadocs
baseDn => baseDN
Removed several unused methods.
Added setWindowSize() + instance member.

*Test*.java
Used the DomainFakeCfg everywhere + SortedSet instead of Set.