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/xl-sets.go

@@ -29,6 +29,7 @@ import (
 
 	"github.com/minio/minio/cmd/logger"
 	"github.com/minio/minio/pkg/bpool"
+	"github.com/minio/minio/pkg/lifecycle"
 	"github.com/minio/minio/pkg/madmin"
 	"github.com/minio/minio/pkg/policy"
 	"github.com/minio/minio/pkg/sync/errgroup"
@@ -518,6 +519,21 @@ func (s *xlSets) DeleteBucketPolicy(ctx context.Context, bucket string) error {
 	return removePolicyConfig(ctx, s, bucket)
 }
 
+// SetBucketLifecycle sets lifecycle on bucket
+func (s *xlSets) SetBucketLifecycle(ctx context.Context, bucket string, lifecycle *lifecycle.Lifecycle) error {
+	return saveLifecycleConfig(ctx, s, bucket, lifecycle)
+}
+
+// GetBucketLifecycle will get lifecycle on bucket
+func (s *xlSets) GetBucketLifecycle(ctx context.Context, bucket string) (*lifecycle.Lifecycle, error) {
+	return getLifecycleConfig(s, bucket)
+}
+
+// DeleteBucketLifecycle deletes all lifecycle on bucket
+func (s *xlSets) DeleteBucketLifecycle(ctx context.Context, bucket string) error {
+	return removeLifecycleConfig(ctx, s, bucket)
+}
+
 // IsNotificationSupported returns whether bucket notification is applicable for this layer.
 func (s *xlSets) IsNotificationSupported() bool {
 	return s.getHashedSet("").IsNotificationSupported()