OPENDJ-1351 (CR-3814) Require a privilege needed for searching cn=changelog
* config.ldiff
** Add the 'changelog-read' value to the 'ds-default-root-privilege-name' multi-valued attribute
* GlobalConfiguration.xml RootDNConfiguration.xml ADSContext.java Privilege.java RootPrivilegeChangeListener.java
** Add the 'changelog-read' privilege where is was needed
* GlobalCfgDefn.properties RootDNCfgDefn.properties
** Add 'changelog-read' privilege definition
* replication.properties replication_fr.properties
** Add messages to prevent user that he needs to have the 'changelog-read' privilege if he wants to search on changelog
* ECLSearchOperation.java
** Add a check to verify that the current connection has the 'changelog-read' privilege before starting the changelog search
* ExternalChangeLogTest.java
** Unit test which ensure that is not possible to perform a changelog search without the 'changelog-read' privilege