teste.xml

   <!-- Redireciona para o Success e Failure default do Magento - Se remover ele tenta procurar assim onestepcheckout/success.phtml -->
   <onepagecheckout_index_success translate="label">
        <reference name="root">
            <action method="setTemplate"><template>page/1column.phtml</template></action>
        </reference>
        <reference name="content">
            <!--<block type="checkout/onepage_success" name="checkout.success" template="checkout/success.phtml"/>    -->
            <block type="Maxima_Cielo/verify" name="Maxima_Cielo.success" template="cielo/success.phtml"/>
        </reference>
    </onepagecheckout_index_success>

    <onepagecheckout_index_failure translate="label">
        <reference name="root">
            <action method="setTemplate"><template>page/1column.phtml</template></action>
        </reference>
        <reference name="content">
            <!--<block type="checkout/onepage_failure" name="checkout.failure" template="checkout/onepage/failure.phtml"/>    -->
            <block type="Core/template" name="Maxima_Cielo.failure" template="cielo/failure.phtml"/>
        </reference>
    </onepagecheckout_index_failure>