[BUG] StatefulSet在开启并发模式下，scaleStrategy.maxUnavailable设置为100%会有问题

[ivanszl]

What happened:
设置sts的spec.podManagementPolicy = Parallel
spec.scaleStrategy.maxUnavailable = 100%
由于修改sts的模版，导致Pod启动不了，状态一直处于pending，后续重新修改会卡住

What you expected to happen:
重新修改后会作用于所有的Pod，可以快速修复业务服务

How to reproduce it (as minimally and precisely as possible):
这个是大体调整的代码：ivanszl@27880d1
Anything else we need to know?:

Environment:

• Kruise version:
• Kubernetes version (use kubectl version):
• Install details (e.g. helm install args):
• Others:

[zmberg]

thanks, i will take a look at this pr.

[zmberg]

#1136

[furykerry]

#1136 fix this issue