Add initial support for bucket lifecycle (#7563)

This PR is based off @sinhaashish's PR for object lifecycle
management, which includes support only for,
- Expiration of object
- Filter using object prefix (_not_ object tags)

N B the code for actual expiration of objects will be included in a
subsequent PR.

cmd/peer-rest-client.go

@@ -30,6 +30,7 @@ import (
 	"github.com/minio/minio/cmd/logger"
 	"github.com/minio/minio/cmd/rest"
 	"github.com/minio/minio/pkg/event"
+	"github.com/minio/minio/pkg/lifecycle"
 	"github.com/minio/minio/pkg/madmin"
 	xnet "github.com/minio/minio/pkg/net"
 	"github.com/minio/minio/pkg/policy"
@@ -329,6 +330,37 @@ func (client *peerRESTClient) SetBucketPolicy(bucket string, bucketPolicy *polic
 	return nil
 }
 
+// RemoveBucketLifecycle - Remove bucket lifecycle configuration on the peer node
+func (client *peerRESTClient) RemoveBucketLifecycle(bucket string) error {
+	values := make(url.Values)
+	values.Set(peerRESTBucket, bucket)
+	respBody, err := client.call(peerRESTMethodBucketLifecycleRemove, values, nil, -1)
+	if err != nil {
+		return err
+	}
+	defer http.DrainBody(respBody)
+	return nil
+}
+
+// SetBucketLifecycle - Set bucket lifecycle configuration on the peer node
+func (client *peerRESTClient) SetBucketLifecycle(bucket string, bucketLifecycle *lifecycle.Lifecycle) error {
+	values := make(url.Values)
+	values.Set(peerRESTBucket, bucket)
+
+	var reader bytes.Buffer
+	err := gob.NewEncoder(&reader).Encode(bucketLifecycle)
+	if err != nil {
+		return err
+	}
+
+	respBody, err := client.call(peerRESTMethodBucketLifecycleSet, values, &reader, -1)
+	if err != nil {
+		return err
+	}
+	defer http.DrainBody(respBody)
+	return nil
+}
+
 // PutBucketNotification - Put bucket notification on the peer node.
 func (client *peerRESTClient) PutBucketNotification(bucket string, rulesMap event.RulesMap) error {
 	values := make(url.Values)