feat: update plan refresh cron job (#359)

* feat: update cron job

* fix: remove env

* fix: update config

Author: bietkul

config/manual.env

@@ -4,7 +4,6 @@ JWT_RSA_PUBLIC_KEY_LOC=sample/rsa-public
 HTTPS_CERT=sample/server.crt
 USERNAME=foo
 PASSWORD=bar
-
 HTTPS_KEY=sample/server.key
 JWT_ROLE_KEY=role
 SET_SNIFFING=false

main.go

@@ -301,17 +301,17 @@ func main() {
 
 	mainRouter := router.PathPrefix("").Subrouter()
 
-	if PlanRefreshInterval == "" {
-		PlanRefreshInterval = "1"
-	} else {
+	// default is hourly
+	interval := "0 0 * * * *"
+
+	if PlanRefreshInterval != "" {
 		_, err := strconv.Atoi(PlanRefreshInterval)
 		if err != nil {
 			log.Fatal("PLAN_REFRESH_INTERVAL must be an integer: ", err)
 		}
+		interval = "0 0 0-59/" + PlanRefreshInterval + " * * *"
 	}
 
-	interval := "@every " + PlanRefreshInterval + "h"
-
 	util.Billing = Billing
 	util.HostedBilling = HostedBilling
 	util.ClusterBilling = ClusterBilling