ACP2E-1120: extend new statuses that can apply for new placed order with free payment

Author: alzota

app/code/Magento/OfflinePayments/etc/config.xml

@@ -40,6 +40,9 @@
                 <allowspecific>0</allowspecific>
                 <group>offline</group>
             </cashondelivery>
+            <free>
+                <group>offline</group>
+            </free>
         </payment>
     </default>
 </config>

app/code/Magento/Payment/etc/adminhtml/system.xml

@@ -24,7 +24,7 @@
                 <field id="payment_action" translate="label" type="select" sortOrder="3" showInDefault="1" showInWebsite="1" canRestore="1">
                     <label>Automatically Invoice All Items</label>
                     <source_model>Magento\Payment\Model\Source\Invoice</source_model>
-                    <comment>If 'Automatically Invoice All Items' is set to 'Yes', the order is placed with the status 'Processing'.</comment>
+                    <comment>If 'Automatically Invoice All Items' is set to 'Yes', the order is placed in 'Processing' state.</comment>
                 </field>
                 <field id="sort_order" translate="label" type="text" sortOrder="100" showInDefault="1" showInWebsite="1" canRestore="1">
                     <label>Sort Order</label>

app/code/Magento/Payment/etc/config.xml

@@ -16,6 +16,7 @@
                 <title>No Payment Information Required</title>
                 <allowspecific>0</allowspecific>
                 <sort_order>1</sort_order>
+                <group>offline</group>
             </free>
             <substitution>
                 <active>0</active>