Fix aks-create when default az output isn't JSON

[mboersma]

What type of PR is this?

/kind bug

What this PR does / why we need it:

Adds -o json to two az commands in aks-create to ensure that the output is JSON and can be parsed. (Users can configure a different default output for az; mine is --output table, which was causing these jq commands to fail.)

Which issue(s) this PR fixes:

N/A

Special notes for your reviewer:

• cherry-pick candidate

TODOs:

• squashed commits
• includes documentation
• adds unit tests

Release note:

NONE

[nojnhuh]

/lgtm
/approve

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 3c1f968d82391d9ac68f23317e25779619f0be5f

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: nojnhuh

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[mboersma]

Oops, sorry, I changed -o json to --output json for consistency with the other commands and force-pushed.

[nojnhuh]

/lgtm

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: c17bbb4269472ac8ed958540542e77fe4aca99fc

[k8s-ci-robot]

@mboersma: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-cluster-api-provider-azure-conformance-dual-stack-with-ci-artifacts	02ad1f4	link	false	/test pull-cluster-api-provider-azure-conformance-dual-stack-with-ci-artifacts

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 51.35%. Comparing base (e3e3e30) to head (02ad1f4).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5191   +/-   ##
=======================================
  Coverage   51.35%   51.35%           
=======================================
  Files         273      273           
  Lines       24670    24670           
=======================================
  Hits        12670    12670           
  Misses      11211    11211           
  Partials      789      789           

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[nawazkh]

/lgtm