fix nxos_config json pipeline error (#36236)

Signed-off-by: Trishna Guha <trishnaguha17@gmail.com>

lib/ansible/modules/network/nxos/nxos_config.py

@@ -113,9 +113,9 @@ options:
         the modified lines are pushed to the device in configuration
         mode.  If the replace argument is set to I(block) then the entire
         command block is pushed to the device in configuration mode if any
-        line is not correct. I(replace config) is supported on Nexus 9K device.
+        line is not correct. I(replace config) is supported only on Nexus 9K device.
     required: false
-    default: lineo
+    default: line
     choices: ['line', 'block', 'config']
   force:
     description:
@@ -290,6 +290,7 @@ backup_path:
 
 
 from ansible.module_utils.basic import AnsibleModule
+from ansible.module_utils.connection import ConnectionError
 from ansible.module_utils.network.common.config import NetworkConfig, dumps
 from ansible.module_utils.network.nxos.nxos import get_config, load_config, run_commands
 from ansible.module_utils.network.nxos.nxos import get_capabilities
@@ -390,12 +391,18 @@ def main():
 
     config = None
 
-    info = get_capabilities(module).get('device_info', {})
-    os_platform = info.get('network_os_platform', '')
+    try:
+        info = get_capabilities(module)
+        api = info.get('network_api', 'nxapi')
+        device_info = info.get('device_info', {})
+        os_platform = device_info.get('network_os_platform', '')
+    except ConnectionError:
+        api = ''
+        os_platform = ''
 
-    if module.params['replace'] == 'config':
+    if api == 'cliconf' and module.params['replace'] == 'config':
         if '9K' not in os_platform:
-            module.fail_json(msg='replace: config is supported only for Nexus 9K series switches')
+            module.fail_json(msg='replace: config is supported only on Nexus 9K series switches')
 
     if module.params['replace_src']:
         if module.params['replace'] != 'config':