further fixes to rename only where required (#35432)

test/units/modules/network/dellos10/dellos10_module.py

@@ -32,9 +32,6 @@ fixture_data = {}
 
 
 def load_fixture(name):
-    # convert illegal filenames (both unix and windows to another char)
-    name = name.replace(':', '_semicolon_')
-
     path = os.path.join(fixture_path, name)
 
     if path in fixture_data:

test/units/modules/network/dellos10/test_dellos10_facts.py

@@ -61,6 +61,7 @@ class TestDellos10Facts(TestDellos10Module):
                     command = str(command).replace('|', '')
                 filename = str(command).replace(' ', '_')
                 filename = filename.replace('/', '7')
+                filename = filename.replace(':', '_colon_')
                 output.append(load_fixture(filename))
             return output