az deployment validate returns exit code 0 when an error is encountered in json

[chaos-panda]

This is autogenerated. Please review and update as needed.

Describe the bug

When you run az deployment validate command against your ARM templates locally or on a CI/CD returns exit code 0 even though you encountered an error and your json error response is not null.

Command Name
az deployment validate

To Reproduce:

Steps to reproduce the behavior. Note that argument values have been redacted, as they may contain sensitive information.

• Put any pre-requisite steps here...
• az deployment validate --location {} --subscription {} --template-file {} --parameters {} --parameters {} --parameters {}

Expected Behavior

Expected to have other than 0 exit code for non-valid templates so those can be captured locally or in CI/CD pipelines.

Environment Summary

Linux-4.15.0-76-generic-x86_64-with-debian-buster-sid
Python 3.6.5
Shell: bash

azure-cli 2.0.81

Extensions:
aks-preview 0.4.11

Additional Context

[arrownj]

Hi @zhoxing-ms , could you please help take a look at this ?

[yonzhan]

add to S166.