[BUG] gke-deploy / PodDisruptionBudget

[epikjjh]

Failed to use PodDisruptionBudget

Same as #725 . When setting spec: maxUnavailable, the builder can't know the ready state well.

Affected builder image

gcr.io/cloud-builders/gke-deploy
(e.g., gcr.io/cloud-builders/docker)

Expected Behavior

Builder should identify that the PodDisruptionBudget is working fine.

Actual Behavior

Even if PodDisruptionBudget is working fine(checked with kubectl), builder identifies this as failure.

Steps to Reproduce the Problem

Use maxUnavailable then apply the gke-deploy-run

Additional Info

At least, we should know maxUnavailable is not supported.