Add SchedulingPolicy for the common operator

[k82cn]

Add .spec.runtime.schedulingPolicy for common operator to use batch scheduler.

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[k82cn]

/assign

[gaocegege]

From https://github.com/kubeflow/common/pull/13#issuecomment-483880849

@k82cn

Sorry for post update: there's a "feature" in upstream, named SchedulingPolicy, which is used to define whether a scheduler feature can be enabled, e.g. toleration. Do we need to have another term for that, e.g. SchedulingSpec?

xref kubernetes/community#1937

@gaocegege

Thanks for the information, Kubeflow requires k8s 1.8, does this feature exist in 1.8?

@k82cn

Thanks for the information, Kubeflow requires k8s 1.8, does this feature exist in 1.8?

nop, but this may make other contributor confuse.

BTW, I think it should be client-go 1.8, k8s 1.11 :)

@jian-he @johnugeorge @richardsliu @terrytangyuan

WDYT