[BUG]Cluster deletion stuck while addon defined preTerminate but pod couldn't startup

[lancelot1989]

kb version: 1.0.0-beta.13

In KB 1.0, preTerminate is execute by kb-agent through http call by cmp-controller, if kb-agent can't startup at all(like initContainer error or container image pull error), cmp-controller will stuck as preTerminate can't be finished. And this will stuck the whole cluster lifecycle.

Steps to reproduce the behavior:

1. pick an addon defined preTerminate action, like mysql
2. use an error image repo or image path in initContainer
3. create cluster
4. the cluster can not startup, as pod can not initialized
5. delete cluster
6. cluster and cmp will stuck