Add a capi webhook wait to fix kubectl apply error in make create-management-cluster

[CecileRobertMichon]

What type of PR is this?
/kind bug

What this PR does / why we need it: Fixes a flake where create-management-cluster fails with:

kubectl apply -f templates/addons/calico-resource-set.yaml
Error from server (InternalError): error when creating "templates/addons/calico-resource-set.yaml": Internal error occurred: failed calling webhook "default.clusterresourceset.addons.cluster.x-k8s.io": Post https://capi-webhook-service.capi-webhook-system.svc:443/mutate-addons-cluster-x-k8s-io-v1alpha3-clusterresourceset?timeout=30s: dial tcp 10.109.76.90:443: connect: connection refused

https://prow.k8s.io/view/gcs/kubernetes-jenkins/logs/periodic-cluster-api-provider-azure-conformance-v1alpha3/1318711310992543744

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:

Please confirm that if this PR changes any image versions, then that's the sole change this PR makes.

TODOs:

• squashed commits
• includes documentation
• adds unit tests

Release note:

Add a capi webhook wait to fix kubectl apply error in make create-management-cluster

[devigned]

/lgtm

[devigned]

/approve

[k8s-ci-robot]

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