Add another state to the PXEKERNEL state machine. After rebooting all

of the free nodes at once (113 nodes) three nodes lost bootinfo reply
packets (one time each) causing them to retry, which was an invalid
state (PXEWAIT to PXEBOOTING).

sql/database-fill.sql

@@ -409,6 +409,7 @@ REPLACE INTO state_transitions VALUES ('PXEKERNEL','SHUTDOWN','PXEBOOTING','Boot
 REPLACE INTO state_transitions VALUES ('PXEKERNEL','PXEBOOTING','PXEBOOTING','Retry');
 REPLACE INTO state_transitions VALUES ('PXEKERNEL','PXEBOOTING','BOOTING','Not Free');
 REPLACE INTO state_transitions VALUES ('PXEKERNEL','PXEWAKEUP','PXEWAKEUP','Retry');
+REPLACE INTO state_transitions VALUES ('PXEKERNEL','PXEWAIT','PXEBOOTING','Retry');
 REPLACE INTO state_transitions VALUES ('NORMALv2','SHUTDOWN','SHUTDOWN','Retry');
 REPLACE INTO state_transitions VALUES ('NORMALv2','SHUTDOWN','PXEBOOTING','DHCP');
 REPLACE INTO state_transitions VALUES ('NORMALv2','ISUP','PXEBOOTING','KernelChange');