Fix typos in kubetest2 jobs and use master instead of experimental images

[upodroid]

/cc @dims

Fixing typos from #30195
Also, kubekins-e2e has had kubetest2 installed in it(#29825) for a while now. There is no need to use the experimental versions of the image.

[dims]

/approve
/lgtm

@upodroid please watch these for any failures! we are too close to 1.28 release

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dims, upodroid

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• config/jobs/kubernetes-sigs/kubetest2/OWNERS [dims]
• config/jobs/kubernetes/sig-cloud-provider/OWNERS [dims]
• config/jobs/kubernetes/sig-node/OWNERS [dims]

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[k8s-ci-robot]

@upodroid: Updated the job-config configmap in namespace default at cluster test-infra-trusted using the following files:

• key kubetest2-canaries.yaml using file config/jobs/kubernetes-sigs/kubetest2/kubetest2-canaries.yaml
• key gcp-gce.yaml using file config/jobs/kubernetes/sig-cloud-provider/gcp/gcp-gce.yaml
• key ec2-containerd.yaml using file config/jobs/kubernetes/sig-node/ec2-containerd.yaml
• key node-kubelet.yaml using file config/jobs/kubernetes/sig-node/node-kubelet.yaml
• key sig-node-presubmit.yaml using file config/jobs/kubernetes/sig-node/sig-node-presubmit.yaml

In response to this:

/cc @dims

Fixing typos from #30195
Also, kubekins-e2e has had kubetest2 installed in it(#29825) for a while now. There is no need to use the experimental versions of the image.

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