[Bug] Install volcano failed on kubernetes master

[hzxuzhonghu]

Is this a BUG REPORT or FEATURE REQUEST?:

/kind bug

What happened:

run kubectl apply -f installer/volcano-development.yaml, the install failed

It seems the volcano-admission-init job failed.

# kubectl get pod -n volcano-system
NAME                                   READY   STATUS              RESTARTS   AGE
volcano-admission-69699bc645-sch7r     0/1     ContainerCreating   0          5m20s
volcano-admission-init-552xz           0/1     Error               0          4m37s
volcano-admission-init-9xkfz           0/1     Error               0          5m7s
volcano-admission-init-jlkfj           0/1     Error               0          5m19s
volcano-admission-init-qqq8s           0/1     Error               0          4m57s
volcano-controllers-694fd88b86-tvlxr   1/1     Running             0          5m19s
volcano-scheduler-75bd5dcd95-wcddb     1/1     Running             0          5m20s

What you expected to happen:

How to reproduce it (as minimally and precisely as possible):

Anything else we need to know?:

This occurs in k8s new version

Server Version: version.Info{Major:"1", Minor:"17+", GitVersion:"v1.17.0-alpha.0.1121+26a381b8e1cf30-dirty", GitCommit:"26a381b8e1cf30021b0169721a874e77d6681b9c", GitTreeState:"dirty", BuildDate:"2019-09-04T10:11:10Z", GoVersion:"go1.12.5", Compiler:"gc", Platform:"linux/amd64"}

Environment:

• Volcano Version:
• Kubernetes version (use kubectl version):
• Cloud provider or hardware configuration:
• OS (e.g. from /etc/os-release):
• Kernel (e.g. uname -a):
• Install tools:
• Others:

[hzxuzhonghu]

/cc @TommyLike

[hzxuzhonghu]

error: SchemaError(sh.volcano.batch.v1alpha1.Job.spec.policies.events): array should have exactly one sub-item

It is related to crd validation,