ios test changes (#35510)

* Fix over-byte

* Update ios tests to call `provider`

To continue to support testing `connection: local`

* Fix command dict handling in ios_user

* Clean up unit tests, too

test/integration/targets/ios_system/tests/cli/set_hostname.yaml

@@ -5,12 +5,12 @@
   ios_config:
     lines: hostname switch
     match: none
-    authorize: yes
+    provider: "{{ cli }}"
 
 - name: configure hostname
   ios_system:
     hostname: foo
-    authorize: yes
+    provider: "{{ cli }}"
   register: result
 
 - assert:
@@ -20,7 +20,7 @@
 - name: verify hostname
   ios_system:
     hostname: foo
-    authorize: yes
+    provider: "{{ cli }}"
   register: result
 
 - assert:
@@ -31,6 +31,6 @@
   ios_config:
     lines: "hostname {{ inventory_hostname }}"
     match: none
-    authorize: yes
+    provider: "{{ cli }}"
 
 - debug: msg="END cli/set_hostname.yaml on connection={{ ansible_connection }}"