OPENDJ-2465 Add support for transactionId in current DJ access and HTTP access loggers

OPENDJ-1666 PR-19 CREST-3.0.0 Migration Design changes overview: * Make the code compiling against CREST-3.0.0 * Implement rest2ldap servlet and Http connection handler as a CHF filter/handler chain * Move all of the functionality out of the opendj-rest2ldap-servlet module and into the opendj-rest2ldap module, since it doesn't require Servlet - Servlet integration is provided by CHF. * Create an Ldap Http Handler which is shared by both rest2ldap servlet and httpConnectionHandler * Remove Rest2LdapContextFactory because the authn filter and handler can communicate directly via Context objects rather than using Servlet "attributes". * Rename Context to RequestState Detailed changes performed: Files which has been mostly modified: * org.opends.server.protocols.http.CollectClientsConnectionFilter * org.forgerock.opendj.rest2ldap.LDAPCollectionResourceProvider * org.forgerock.opendj.rest2ldap.ReferenceAttributeMapper Other changes are mostly minor, they just ensure that code compile against CREST-3.0.0.

OPENDJ-1666 Code cleanup * org.opends.server.protocols.http.HttpConnectionHandler ** Fix copyright section ** Make code more readable *** Reformat *** Inline some local variables * org.opends.server.protocols.http.HTTPClientConnection ** Fix copyright section ** Reformat * org.opends.server.protocols.http.CollectClientConnectionsFilter ** Fix copyright * org.opends.server.protocols.http.CollectClientConnectionsFilterTest ** Reformat

OPENDJ-1777 Move test source directory to src/test/java Move all test code from tests/unit-tests-testng/src/server directory to maven standard test source directory src/test/java Update pom.xml accordingly