net_put module: add default mode to copy binary files (#41476)

* add default mode to copy binary files

* sanity fix

* add version for new options

lib/ansible/modules/network/files/net_put.py

@@ -42,6 +42,15 @@ options:
       - Filename from src and at default directory of user shell on
         network_os.
     required: no
+  mode:
+    description:
+      - Set the file transfer mode. If mode is set to 'template' then src
+        file will go through jinja2 template engine to replace any vars if
+        present in src file. If mode is set to 'binary' then file will be
+        copied as it is to destination device.
+    default: binary
+    choices: ['binary', 'template']
+    version_added: "2.7"
 
 requirements:
     - "scp"