integration: investigate TestRestartMonitor's failure
integration: investigate TestRestartMonitor's failure

- task.Kill() might fail in theory
- Giving a longer timeout may help us understand whether the failure is
  a timing issue or not.

Signed-off-by: Kazuyoshi Kato <732288c132d39c7d9231a005036e5ecd0fff1d64@amazon.com>

estesp/containerd,dmcgowan/containerd,containerd/containerd,containerd/containerd,mikebrow/containerd,thaJeztah/containerd,mikebrow/containerd,estesp/containerd,thaJeztah/containerd,dmcgowan/containerd