Add proper hostname cleanup for nxos tests (#61810)

(cherry picked from commit c5a4086ed7)

test/integration/targets/nxos_config/tasks/main.yaml

@@ -1,4 +1,15 @@
 ---
-- { include: cli.yaml, tags: ['cli'] }
-- { include: nxapi.yaml, tags: ['nxapi'] }
-- { include: cli_config.yaml, tags: ['cli_config'] }
+# Some of the tests in this suite change the hostname to switch.
+# This block/always ensures the hostname gets changed back to
+# the correct name.
+- block:
+  - { include: cli.yaml, tags: ['cli'] }
+  - { include: nxapi.yaml, tags: ['nxapi'] }
+  - { include: cli_config.yaml, tags: ['cli_config'] }
+
+  always:
+  - name: "Change hostname back to {{ inventory_hostname_short }}"
+    nxos_config:
+      lines:
+        - "hostname {{ inventory_hostname_short }}"
+      match: none

test/integration/targets/nxos_smoke/tasks/main.yaml

@@ -1,3 +1,14 @@
 ---
-- { include: cli.yaml, tags: ['cli'] }
-- { include: nxapi.yaml, tags: ['nxapi'] }
+# Some of the tests in this suite change the hostname to switch.
+# This block/always ensures the hostname gets changed back to
+# the correct name.
+- block:
+  - { include: cli.yaml, tags: ['cli'] }
+  - { include: nxapi.yaml, tags: ['nxapi'] }
+
+  always:
+  - name: "Change hostname back to {{ inventory_hostname_short }}"
+    nxos_config:
+      lines:
+        - "hostname {{ inventory_hostname_short }}"
+      match: none