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-v1-bucket.go

@@ -23,6 +23,7 @@ import (
 
 	"github.com/minio/minio-go/v6/pkg/s3utils"
 	"github.com/minio/minio/cmd/logger"
+	"github.com/minio/minio/pkg/lifecycle"
 	"github.com/minio/minio/pkg/policy"
 )
 
@@ -308,6 +309,21 @@ func (xl xlObjects) DeleteBucketPolicy(ctx context.Context, bucket string) error
 	return removePolicyConfig(ctx, xl, bucket)
 }
 
+// SetBucketLifecycle sets lifecycle on bucket
+func (xl xlObjects) SetBucketLifecycle(ctx context.Context, bucket string, lifecycle *lifecycle.Lifecycle) error {
+	return saveLifecycleConfig(ctx, xl, bucket, lifecycle)
+}
+
+// GetBucketLifecycle will get lifecycle on bucket
+func (xl xlObjects) GetBucketLifecycle(ctx context.Context, bucket string) (*lifecycle.Lifecycle, error) {
+	return getLifecycleConfig(xl, bucket)
+}
+
+// DeleteBucketLifecycle deletes all lifecycle on bucket
+func (xl xlObjects) DeleteBucketLifecycle(ctx context.Context, bucket string) error {
+	return removeLifecycleConfig(ctx, xl, bucket)
+}
+
 // IsNotificationSupported returns whether bucket notification is applicable for this layer.
 func (xl xlObjects) IsNotificationSupported() bool {
 	return true