Fix issues with ironware modules (#33068)

- authorize was not working as expected
 - use end command to get to exec context instead of exit
 - error due to mishandling of global variable _DEVICE_CONFIG

lib/ansible/module_utils/ironware.py

@@ -96,6 +96,7 @@ def run_commands(module, commands, check_rc=True):
 
 
 def get_config(module, source='running', flags=None):
+    global _DEVICE_CONFIG
     if source is 'running' and flags is None and _DEVICE_CONFIG is not None:
         return _DEVICE_CONFIG
     else:

lib/ansible/modules/network/ironware/ironware_config.py

@@ -228,7 +228,7 @@ def run(module, result):
     if result['changed'] or module.params['save_when'] == 'always':
         result['changed'] = True
         if not module.check_mode:
-            cmd = {'command': 'write memory', 'output': 'text'}
+            cmd = {'command': 'write memory'}
             run_commands(module, [cmd])
 
 

lib/ansible/plugins/action/ironware.py

@@ -60,6 +60,8 @@ class ActionModule(_ActionModule):
         pc.private_key_file = provider['ssh_keyfile'] or self._play_context.private_key_file
         pc.timeout = int(provider['timeout'] or C.PERSISTENT_COMMAND_TIMEOUT)
         pc.become = provider['authorize'] or False
+        if pc.become:
+            pc.become_method = 'enable'
         pc.become_pass = provider['auth_pass']
 
         display.vvv('using connection plugin %s' % pc.connection, pc.remote_addr)
@@ -78,8 +80,8 @@ class ActionModule(_ActionModule):
         conn = Connection(socket_path)
         out = conn.get_prompt()
         if to_text(out, errors='surrogate_then_replace').strip().endswith(')#'):
-            display.vvvv('wrong context, sending exit to device', self._play_context.remote_addr)
+            display.vvvv('wrong context, sending end to device', self._play_context.remote_addr)
-            conn.send_command('exit')
+            conn.send_command('end')
 
         task_vars['ansible_socket'] = socket_path