Leader election lease tunables

Expose the leader election tunables for lease duration, renew deadline
and retry period via environment variables.

This is inspired by rabbitmq operator exposes the same.

Jira: OSPRH-16335

Depends-On: openstack-k8s-operators/lib-common#627

Author: hjensas

main.go

@@ -20,6 +20,7 @@ import (
 	"context"
 	"crypto/tls"
 	"flag"
+	"fmt"
 	"os"
 	"strings"
 
@@ -47,6 +48,8 @@ import (
 	"github.com/openstack-k8s-operators/ironic-operator/controllers"
 	keystonev1beta1 "github.com/openstack-k8s-operators/keystone-operator/api/v1beta1"
 	mariadbv1beta1 "github.com/openstack-k8s-operators/mariadb-operator/api/v1beta1"
+
+	"github.com/openstack-k8s-operators/lib-common/modules/common/operator"
 	//+kubebuilder:scaffold:imports
 )
 
@@ -97,7 +100,7 @@ func main() {
 		c.NextProtos = []string{"http/1.1"}
 	}
 
-	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
+	options := ctrl.Options{
 		Scheme: scheme,
 		Metrics: metricsserver.Options{
 			BindAddress: metricsAddr,
@@ -110,7 +113,15 @@ func main() {
 				Port:    9443,
 				TLSOpts: []func(config *tls.Config){disableHTTP2},
 			}),
-	})
+	}
+
+	err := operator.SetManagerOptions(&options, setupLog)
+	if err != nil {
+		setupLog.Error(err, fmt.Sprintf("unable to set controller options"))
+		os.Exit(1)
+	}
+
+	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), options)
 	if err != nil {
 		setupLog.Error(err, "unable to start manager")
 		os.Exit(1)