kubectl: add --output jsonpath-as-json to print a json array of results
kubeadm: fix test case using jsonpath result of non-primitive type
Kubernetes-commit: ba386aba4fe02906089ca3e96ee07925bced5d4d
* When user try execute command like `kubectl get pod test -o custom-columns=CONTAINER:.spec.containers[-1].name`
It will throw a panic about slice index out of bounds. This patch fix it.
* add test case
Kubernetes-commit: 1e245fad87584a28809f8f5d380b766edfa984ec
In jsonpath, when filtering a list, if allowMissingKeys is true, skip
over any items that are missing an intermediate key in the filter,
instead of returning a confusing error.
For example, if the filter is
{.items[?(@.metadata.annotations.foo=="bar")].metadata.name}
we should return all items where metadata.annotations.foo == bar, but if
an item in the list does not have metadata, metadata.annotations, or
metadata.annotations.foo, skip it instead of erroring.
Kubernetes-commit: e6f97d514d83fc2614d1ad4e18de0b318cc81653
