nxos issu should abort when issu is not possible. (#43793)

* Use expect module to copy files

* Abort when issu not possible

* Update copy_kick_system_images.yaml

* Update platform/version support

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

@@ -34,7 +34,7 @@ notes:
     - Tested against the following platforms and images
       - N9k 7.0(3)I4(6), 7.0(3)I5(3), 7.0(3)I6(1), 7.0(3)I7(1), 7.0(3)F2(2), 7.0(3)F3(2)
       - N3k 6.0(2)A8(6), 6.0(2)A8(8), 7.0(3)I6(1), 7.0(3)I7(1)
-      - N7k 7.3(0)D1(1), 8.0(1), 8.2(1)
+      - N7k 7.3(0)D1(1), 8.0(1), 8.1(1), 8.2(1)
     - This module requires both the ANSIBLE_PERSISTENT_CONNECT_TIMEOUT and
       ANSIBLE_PERSISTENT_COMMAND_TIMEOUT timers to be set to 600 seconds or higher.
       The module will exit if the timers are not set properly.
@@ -61,7 +61,7 @@ options:
         version_added: "2.5"
         description:
             - Upgrade using In Service Software Upgrade (ISSU).
-              (Only supported on N9k platforms)
+              (Supported on N5k, N7k, N9k platforms)
             - Selecting 'required' or 'yes' means that upgrades will only
               proceed if the switch is capable of ISSU.
             - Selecting 'desired' means that upgrades will use ISSU if possible
@@ -474,8 +474,14 @@ def do_install_all(module, issu, image, kick=None):
         # needs to be upgraded.
         if impact_data['disruptive']:
             # Check mode indicated that ISSU is not possible so issue the
-            # upgrade command without the non-disruptive flag.
-            issu = 'no'
+            # upgrade command without the non-disruptive flag unless the
+            # playbook specified issu: yes/required.
+            if issu == 'yes':
+                msg = 'ISSU/ISSD requested but impact data indicates ISSU/ISSD is not possible'
+                module.fail_json(msg=msg, raw_data=impact_data['list_data'])
+            else:
+                issu = 'no'
+
         commands = build_install_cmd_set(issu, image, kick, 'install')
         opts = {'ignore_timeout': True}
         # The system may be busy from the call to check_mode so loop until
@@ -524,6 +530,9 @@ def main():
     kif = module.params['kickstart_image_file']
     issu = module.params['issu']
 
+    if re.search(r'(yes|required)', issu):
+        issu = 'yes'
+
     if kif == 'null' or kif == '':
         kif = None