eos_l2_interface handle "Interface does not exist" (#56787)

* Quick and dirty attempt to handle eapi error

* Well this should probably change

* Hopefully this works correctly?

* Fix check_rc handling with httpapi

* Add tests that should hopefully cover the error

* Fix warnings

* Improve tests

lib/ansible/module_utils/network/eos/eos.py

@@ -449,10 +449,10 @@ class HttpApi:
         def run_queue(queue, output):
             try:
                 response = to_list(self._connection.send_request(queue, output=output))
-            except Exception as exc:
+            except ConnectionError as exc:
                 if check_rc:
                     raise
-                return to_text(exc)
+                return to_list(to_text(exc))
 
             if output == 'json':
                 response = [json.loads(item) for item in response]

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

@@ -211,8 +211,8 @@ def map_config_to_obj(module, warnings):
     for item in set(match):
         command = {'command': 'show interfaces {0} switchport | include Switchport'.format(item),
                    'output': 'text'}
-        command_result = run_commands(module, command)
-        if command_result[0] == "% Interface does not exist":
+        command_result = run_commands(module, command, check_rc=False)
+        if "Interface does not exist" in command_result[0]:
             warnings.append("Could not gather switchport information for {0}: {1}".format(item, command_result[0]))
             continue
         elif command_result[0] != "":
@@ -298,9 +298,7 @@ def main():
                            supports_check_mode=True)
 
     warnings = list()
-    result = {'changed': False}
-    if warnings:
-        result['warnings'] = warnings
+    result = {'changed': False, 'warnings': warnings}
 
     want = map_params_to_obj(module)
     have = map_config_to_obj(module, warnings)