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_config/tests/cli/src_basic.yaml

@@ -9,12 +9,12 @@
     parents:
       - interface Loopback999
     match: none
-    authorize: yes
+    provider: "{{ cli }}"
 
 - name: configure device with config
   ios_config:
     src: basic/config.j2
-    authorize: yes
+    provider: "{{ cli }}"
   register: result
 
 - name: debug, remove me
@@ -30,7 +30,7 @@
 - name: check device with config
   ios_config:
     src: basic/config.j2
-    authorize: yes
+    provider: "{{ cli }}"
   register: result
 
 - assert: