* add IsOneShot function to fit PodKill and AwsRestart
Signed-off-by: YangKeao <keao.yang@yahoo.com>

* add oneshot annotation for gcpchaos
Signed-off-by: YangKeao <keao.yang@yahoo.com>

* add ContainerKill to the onshot list
Signed-off-by: YangKeao <keao.yang@yahoo.com>

* fix e2e test
Signed-off-by: YangKeao <keao.yang@yahoo.com>
Co-authored-by: Ti Chi Robot <ti-community-prow-bot@tidb.io>