Fix for JS-1251/JS-1285: Handling of duplicate order key in database failed if order log contains some lines

.02 18:15:14.784     0 56419.85AE4700 INSERT into SCHEDULER_ORDERS ("CREATED_TIME","ID","INITIAL_STATE","JOB_CHAIN","MOD_TIME","ORDERING","PRIORITY","SPOOLER_ID","STATE","STATE_TEXT","TITLE") values ('2015-06-02 16:15:14','/home/sos/scheduler/engine/engine-tests/target/6462093109224634112/X-MATCHING-TEST-DONT-DELETE','100','test','2015-06-02 16:15:14',12,0,'tes
t','100','','') [23505-187]"]
.02 18:15:14.784     0 56419.85AE4700 [xc.insert 2, "executeUpdate"]
.02 18:15:14.784     0 56419.85AE4700 [xc.append "sos::scheduler::order::Order::db_try_insert"]
.02 18:15:14.784     0 56419.85AE4700 {scheduler} sos::scheduler::order::Order::db_try_insert Z-JAVA-105  Java exception org.h2.jdbc.JdbcSQLException: Unique index or primary key violation: "PRIMARY_KEY_E ON PUBLIC.SCHEDULER_ORDERS(SPOOLER_ID, JOB_CHAIN, ID) VALUES ('test', 'test', '/home/sos/scheduler/engine/engine-tests/target/6462093109224634112/X-MATCHING-T
EST-DONT-DELETE', 76)"; SQL statement:
.02 18:15:14.784     0 56419.85AE4700 INSERT into SCHEDULER_ORDERS ("CREATED_TIME","ID","INITIAL_STATE","JOB_CHAIN","MOD_TIME","ORDERING","PRIORITY","SPOOLER_ID","STATE","STATE_TEXT","TITLE") values ('2015-06-02 16:15:14','/home/sos/scheduler/engine/engine-..., method=executeUpdate [] / sos::scheduler::order::Order::db_try_insert
.02 18:15:14.784     0 56419.85AE4700 {scheduler} sos::scheduler::database::Transaction::execute  ROLLBACK  (sos::scheduler::order::Order::db_try_insert)
.02 18:15:14.785     1 56419.85AE4700 [xc.insert "String0(1024)"]
.02 18:15:14.786     1 56419.85AE4700 [ERROR SOS-1221  Wert ist f<FC>r String0(1024) zu lang: ]
.02 18:15:14.786     0 56419.85AE4700 [xc.insert "<order end_time="2015-06-02T16:15:14.644Z" history_id="11" on_blacklist="yes" path="/" start_time="2015-06-02T16:15:13.569Z" touched="yes"><file_based state="not_initialized"><requisites/></file_based><log>2015-06-02 18:15:13.575+0200 [info]   (Task test-dont-delete:118) SCHEDULER-842  Task is going to process Order test:/home/sos/scheduler/engine/engine-tests/target/6462093109224634112/X-MATCHING-TEST-DONT-DELETE, state=100, on JobScheduler