feat: talos_patches makejinja func and move certain patches to patches directory (#1509)

bootstrap/scripts/plugin.py

@@ -11,6 +11,20 @@ import makejinja
 import validation
 
 
+# Return the filename of a path without the j2 extension
+def basename(value: str) -> str:
+    return Path(value).stem
+
+
+# Return a list of files in the talos patches directory
+def talos_patches(value: str) -> list[str]:
+    path = Path(f'bootstrap/templates/kubernetes/bootstrap/talos/patches/{value}')
+    if not path.is_dir():
+        return []
+    return [str(f) for f in path.glob('*.yaml.j2') if f.is_file()]
+
+
+# Return the nth host in a CIDR range
 def nthhost(value: str, query: int) -> str:
     value = IPNetwork(value)
     try:
@@ -50,7 +64,11 @@ class Plugin(makejinja.plugin.Plugin):
 
 
     def filters(self) -> makejinja.plugin.Filters:
-        return [nthhost]
+        return [basename, nthhost]
+
+
+    def functions(self) -> makejinja.plugin.Functions:
+        return [talos_patches]
 
 
     def path_filters(self):