Add test certificates

tests/ca-apiserver/ca.key

tests/ca-apiserver/ca.pem

tests/ca-apiserver/ca.srl

tests/ca-apiserver/client.csr

tests/ca-apiserver/client.key

tests/ca-apiserver/client.pem

tests/ca-apiserver/cm.csr

tests/ca-apiserver/cm.key

tests/ca-apiserver/cm.pem

tests/ca-apiserver/kubelet.csr

tests/ca-apiserver/kubelet.key

tests/ca-apiserver/kubelet.pem

tests/ca-apiserver/scheduler.csr

tests/ca-apiserver/scheduler.key

tests/ca-apiserver/scheduler.pem

tests/ca-kubelet/apiserver.csr

tests/ca-kubelet/apiserver.key

tests/ca-kubelet/apiserver.pem

tests/ca-kubelet/ca.key

tests/ca-kubelet/ca.pem