The 0.7.6 version does not throw an exception when keepAliveOnce failed

[sukidesuka]

Versions

• etcd: 3.5.9
• jetcd: 0.7.6
• java: 11

Describe the bug

If you use keepAliveOnce on an expired lease, it should throw an
io.etcd.jetcd.common.exception.EtcdException: etcdserver: requested lease not found exception.
However, in version 0.7.6, nothing happens and it behaves as if the lease is successfully renewed.

When I used jetcd 0.7.5, it immediately worked fine.

To Reproduce

1. Use grant to create a lease.
2. Wait for the lease to expire.
3. Use keepAliveOnce to renew the lease.

Expected behavior
throw an io.etcd.jetcd.common.exception.EtcdException: etcdserver: requested lease not found exception.

Additional context

Normally, I would start by creating a lease and then binding it to a key. So if the reproduction fails, you can try binding the lease to a key.

My ETCD is running in a Kubernetes cluster and using 3 replicas.

[sukidesuka]

@lburgazzoli

[lburgazzoli]

@sukidesuka do you have any time to provide a reproduce in a form of an integration test ?

[lburgazzoli]

@sukidesuka I've created a pr #1256, can you out the fix ?