higher create-workload-cluster timeout for large clusters

[jackfrancis]

What type of PR is this?

/kind failing-test

What this PR does / why we need it:

We need more time to be able to build 1k+ node clusters.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

Special notes for your reviewer:

TODOs:

• squashed commits
• includes documentation
• adds unit tests
• cherry-pick candidate

Release note:

NONE

[jackfrancis]

/test pull-cluster-api-provider-azure-load-test-1k-dra-with-workload-custom-builds

[nojnhuh]

/lgtm
/approve

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: f59cc8ad31018f5361f115c814f871d43a37d488

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: nojnhuh

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Needs approval from an approver in each of these files:

• OWNERS [nojnhuh]

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[nojnhuh]

/hold for test

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 52.82%. Comparing base (6e606c6) to head (df34e0d).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5776   +/-   ##
=======================================
  Coverage   52.82%   52.82%           
=======================================
  Files         279      279           
  Lines       29629    29629           
=======================================
  Hits        15652    15652           
  Misses      13160    13160           
  Partials      817      817           

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[k8s-ci-robot]

New changes are detected. LGTM label has been removed.