webapp:az appservice plan show does not provide correct exit status

[undervillain]

az feedback auto-generates most of the information requested below, as of CLI version 2.0.62

Describe the bug
az appservice plan show does not provide correct exit status

To Reproduce

1. execute az appservice plan show with arguments describing a non-existent resource, for instance:

az appservice plan show --resource-group nonesuch-rg-doesntexist --name nonesuch-app-doesntexist

Expected behavior
non-zero exit status, similar to as provided by other az <resource> show commands

Environment summary
ubunut 18.04 installed from package

Thanks for the feedback! We are routing this to the appropriate team for follow-up. cc @antcp, @AzureAppServiceCLI.

Issue Details

---

az feedback auto-generates most of the information requested below, as of CLI version 2.0.62

Describe the bug
az appservice plan show does not provide correct exit status

To Reproduce

1. execute az appservice plan show with arguments describing a non-existent resource, for instance:

az appservice plan show --resource-group nonesuch-rg-doesntexist --name nonesuch-app-doesntexist

Expected behavior
non-zero exit status, similar to as provided by other az <resource> show commands

Environment summary
ubunut 18.04 installed from package

Author:	undervillain
Assignees:	-
Labels:	App Services, Service Attention, needs-triage, question
Milestone:	-

[yungezz]

route to appropriate team

[Kotasudhakarreddy]

Able to repro the issue. Will work on this in future releases.