eos_l2_interface: Handle `Interface does not exist` (#56140)

* Fail on switchport error

* Handle `Interface does not exist` when gathering switchport.

lib/ansible/modules/network/eos/eos_l2_interface.py

@@ -200,7 +200,7 @@ def map_obj_to_commands(updates, module):
     return commands
 
 
-def map_config_to_obj(module):
+def map_config_to_obj(module, warnings):
     config = get_config(module, flags=['| section interface'])
     configobj = NetworkConfig(indent=3, contents=config)
 
@@ -214,7 +214,10 @@ def map_config_to_obj(module):
         command = {'command': 'show interfaces {0} switchport | include Switchport'.format(item),
                    'output': 'text'}
         command_result = run_commands(module, command)
-        if command_result[0] != "":
+        if command_result[0] == "% Interface does not exist":
+            warnings.append("Could not gather switchport information for {0}: {1}".format(item, command_result[0]))
+            continue
+        elif command_result[0] != "":
             switchport_cfg = command_result[0].split(':')[1].strip()
 
             if switchport_cfg == 'Enabled':
@@ -302,7 +305,7 @@ def main():
         result['warnings'] = warnings
 
     want = map_params_to_obj(module)
-    have = map_config_to_obj(module)
+    have = map_config_to_obj(module, warnings)
     commands = map_obj_to_commands((want, have), module)
     result['commands'] = commands