DeleteAll for KV (#9431)

Expire K/V Values

Regenerate Code

pathfix

Update Expiry on Update

Check for Exit Signal

gofmt

Rewrote Go Routine

Remove tempoarily cleanup loop

fix expiretime

TEST: Expired Watchdog as GoRoutine

Check if Srv is nil

Use Scheduler/Worker for Expired Key CleanUp

add license

fix scheduler job type; DoJob Restructuring

Remove unused imports and constants

move db migration from 5.4 to 5.5

store/sqlstore/upgrade.go

@@ -510,7 +510,7 @@ func UpgradeDatabaseToVersion54(sqlStore SqlStore) {
 func UpgradeDatabaseToVersion55(sqlStore SqlStore) {
 	// TODO: Uncomment following condition when version 5.5.0 is released
 	// if shouldPerformUpgrade(sqlStore, VERSION_5_4_0, VERSION_5_5_0) {
-
+	sqlStore.CreateColumnIfNotExists("PluginKeyValueStore", "ExpireAt", "bigint(20)", "bigint", "0")
 	// 	saveSchemaVersion(sqlStore, VERSION_5_5_0)
 	// }
 }