Rename "content" default key to "base"

Author: ipspace

docs/plugins/files.md

@@ -97,7 +97,7 @@ Due to the structure of the custom configuration filenames, the **‌files** plu
 Use the **netlab show defaults paths.custom.files** command to display the order of components _netlab_ expects you to use in the custom configuration template names. The `.j2` suffix is automatically appended to the names generated from the **‌configlets** dictionary.
 ```
 
-Finally, you might want to create a variant of a configuration template for a specific provider, and a more generic one for all other providers. That cannot be easily expressed as a dictionary structure, so the **files** plugin treats **content** key as a special case, meaning *do not append anything to the file name*. The following example will thus create **ifup/eos.j2**  and **ifup/eos-clab.j2** files:
+Finally, you might want to create a variant of a configuration template for a specific provider, and a more generic one for all other providers. That cannot be easily expressed as a dictionary structure, so the **files** plugin treats **base** key as a special case, meaning *do not append anything to the file name*. The following example will thus create **ifup/eos.j2**  and **ifup/eos-clab.j2** files:
 
 ```
 configlets:
@@ -106,7 +106,7 @@ configlets:
       clab: |
         interface Management0
           description Management interface
-      content: |
+      base: |
         interface Management1
           description Management interface
 ```

netsim/extra/files/plugin.py

@@ -13,7 +13,7 @@ def restructure_files(topology: Box) -> None:
     return                                            # Everything else will be handled in attribute validation code
 
   f_dict = filemaps.box_to_dict(topology.files)       # Recover the original data structure
-  f_list = [ {'path': k, 'content': v} 
+  f_list = [ {'path': k, 'content': v}
                for k,v in f_dict.items() ]            # Create normalized list-based data structure
   topology.files = f_list                             # Replace dict with list
 
@@ -26,7 +26,7 @@ def build_files(cfg: Box, path: str) -> None:       # Recursively transform conf
     for k,v in cfg.items():                           # Iterate over dictionary contents
       separator = '' if path.endswith('/') else \
                   '-' if k in topology.defaults.providers else '.'
-      if k != 'content':                              # If this is not a 'raw content' element
+      if k != 'base':                                 # If this is not a 'base content' element
         k_path = path + separator + k                 # ... add next bit to file name (provider is prefixed with '-')
       else:
         k_path = path