Lenovo integration test roles 1 (#44559)

* Integration test suit for cnos_facts, cnos_config, cnos_command, enos_facts, enos_config and enos_command.

* Update all_facts.yaml

* Update invalid_subset.yaml

* Update not_hardware.yaml

* Adding cnos_backup, cnos_bgp, cnos_conditional_command, cnos_condtional_template, cnos_ethernet, cnos_portchannel, cnos_rollback.

* Update README.md

* Adding the sample roles for cnos_save, cnos_show_run, cnos_template, cnos_vlag and cnos_vlan

test/integration/targets/enos_command/vars/main.yaml

@@ -0,0 +1,13 @@
+---
+cli:
+  host: "{{ inventory_hostname }}"
+  port: 22
+  username: admin
+  password: admin
+#  transport: cli
+  timeout: 30
+  authorize: True
+  auth_pass:
+
+enos_command_data:
+  - {}