[release-1.13] explicitly set default AZURE_SYNC_PERIOD for ASO

[k8s-infra-cherrypick-robot]

This is an automated cherry-pick of #4764

/assign nojnhuh

[`AZURE_SYNC_PERIOD`](https://azure.github.io/azure-service-operator/guide/aso-controller-settings-options/#azure_sync_period) for ASO now defaults to `1h` instead of "effectively never"

[nojnhuh]

/lgtm
/approve

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 68572797a16ad5e7f923ad4194d4d3bb997456b5

[nojnhuh]

/kind bug

[jackfrancis]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jackfrancis, nojnhuh

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 62.07%. Comparing base (c06923e) to head (0c3bfb7).
Report is 1 commits behind head on release-1.13.

Additional details and impacted files

@@               Coverage Diff                @@
##           release-1.13    #4782      +/-   ##
================================================
- Coverage         62.08%   62.07%   -0.02%     
================================================
  Files               189      189              
  Lines             14954    14954              
================================================
- Hits               9284     9282       -2     
- Misses             5029     5031       +2     
  Partials            641      641              

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