NET-1226: Scalability Improvements (#2987)

* add api to check if failover node existed

* remove 5 minute peerUpdate

* update peerUpdate to trigger pull

* update Action name to SignalPull

* revert the peerUpdate from SignalPull

* fix getfailover error issue

* rm acls creation for on-prem emqx

* remove use of acls

* add additional broker status field on status api

* NET-1165: Remove creation of acls on emqx (#2996)

* rm acls creation for on-prem emqx

* remove use of acls

* add additional broker status field on status api

* comment out mq reconnect logic

* configure mq conn params

* add metric_interval in ENV for publishing metrics

* add metric_interval in ENV for publishing metrics

* update PUBLISH_METRIC_INTERVAL env name

* revert the mq setttings back

* fix error nil issue

---------

Co-authored-by: abhishek9686 <abhi281342@gmail.com>
Co-authored-by: Abhishek K <32607604+abhishek9686@users.noreply.github.com>

controllers/server.go

@@ -117,6 +117,7 @@ func getStatus(w http.ResponseWriter, r *http.Request) {
 	type status struct {
 		DB               bool      `json:"db_connected"`
 		Broker           bool      `json:"broker_connected"`
+		IsBrokerConnOpen bool      `json:"is_broker_conn_open"`
 		LicenseError     string    `json:"license_error"`
 		IsPro            bool      `json:"is_pro"`
 		TrialEndDate     time.Time `json:"trial_end_date"`
@@ -141,6 +142,7 @@ func getStatus(w http.ResponseWriter, r *http.Request) {
 	currentServerStatus := status{
 		DB:               database.IsConnected(),
 		Broker:           mq.IsConnected(),
+		IsBrokerConnOpen: mq.IsConnectionOpen(),
 		LicenseError:     licenseErr,
 		IsPro:            servercfg.IsPro,
 		TrialEndDate:     trialEndDate,