test(cloudflare): mock provider for cf change tests

[vflaux]

What does it do ?

Change TestCloudFlareProvider_newCloudFlareChange() to use a mockProdiver instead of a real one with fake credentials.
Also edit the way tests comments are generated.

Motivation

Current implementation perform a query on cloudflare api as it use a real provider & cloudflare client which is not needed for this test.
This decrease cloudflare package test up to 800ms on my machine. (2,3s->1.5s)

More

• Yes, this PR title follows Conventional Commits
• Yes, I added unit tests
• Yes, I updated end user documentation accordingly

[k8s-ci-robot]

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[mloiseleur]

/ok-to-test

[mloiseleur]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mloiseleur

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[ivankatliarchuk]

/lgtm