ESDEV-2410 Keeping time 3days after validity time

renamed method
ESDEV-2410 Keeping time 3days after validity time

added valid attribute
ESDEV-2410 Keeping time 3days after validity time

processor set validity
ESDEV-2410 Keeping time 3days after validity time

changed 24 hours validity to 12
ESDEV-2410 Keeping time 3days after validity time

manager set validity
ESDEV-2410 Keeping time 3days after validity time

manager servers getter
ESDEV-2410 Keeping time 3days after validity time

added delete method
ESDEV-2410 Keeping time 3days after validity time

renamed node to server
ESDEV-2410 Keeping time 3days after validity time

inactive servers functionality