Fix up the new N9K group name.

automation/cleu-ansible-n9k/add-aaa-playbook.yml

@@ -1,7 +1,7 @@
 ---
 - name: Configure core switches
   hosts:
-      - Core
+      - NXOS
       - MCC
   gather_facts: false
   connection: network_cli

automation/cleu-ansible-n9k/configure-switchport-playbook.yml

@@ -1,6 +1,6 @@
 ---
 - name: Configure switchport
-  hosts: Core
+  hosts: NXOS
   gather_facts: false
   connection: network_cli
   roles:

automation/cleu-ansible-n9k/run-cli-playbook.yml

@@ -1,7 +1,7 @@
 ---
 - name: Configure switchport
   hosts:
-      - Core
+      - NXOS
       - MCC
   gather_facts: false
   connection: network_cli