ROADMAP: update to reflect the latest proposal

Signed-off-by: Jia Zhang <zhang.jia@linux.alibaba.com>

ROADMAP.md

@@ -15,7 +15,7 @@ This document provides the roadmap of Inclavare Containers project.
 
 - Integrate libenclave and libcontainer. 
 
-## Enclave Runtime
+## Enclave Runtimes
 
 - Support more enclave runtimes such as [WAMR](https://github.com/bytecodealliance/wasm-micro-runtime), [sgx-lkl](https://github.com/lsds/sgx-lkl), [enarx](https://github.com/enarx/enarx), [openenclave](https://github.com/openenclave/openenclave) and so on.
 - Provide a reference Enclave OS for confidential VM. 
@@ -24,6 +24,14 @@ This document provides the roadmap of Inclavare Containers project.
 
 - Implement bundle cache and enclave pooling for dramatically speeding up enclave launch time.
 
-## Enclave Attestation Infrastructure
+## shelter
+
+- kubectl plugin for confidential K8s management.
+
+## shelterd
+
+- Daemon server for shelter clients.
+
+## enclaved & stub enclave
 
 - Implement general attestation service and infrastructure for confidential Kubernetes.