Port eos tests to network_cli (#33586)

* Add eos and fix tests to run multiple connections

* Update tests to report connection

* Add missing START messages

* Fix unspecified connection

* Python 3 updates

Exceptions don't have `.message` in Python 3

* Override `become` when using `connection=local`

* Slight restructuring to make eapi easier later on

* Move eapi toggle to prepare_eos
* Pull out connection on eapi tasks

test/integration/targets/eos_eapi/tests/cli/start.yaml

@@ -4,15 +4,14 @@
   eos_eapi:
     state: started
     provider: "{{ cli }}"
+  become: yes
   register: eos_eapi_output
-  connection: local
 
 - eos_command:
     commands:
       - show management api http-commands | json
     provider: "{{ cli }}"
   register: http_config
-  connection: local
 
 - debug: var=http_config
   when: debug
@@ -25,8 +24,8 @@
   eos_eapi:
     state: started
     provider: "{{ cli }}"
+  become: yes
   register: eos_eapi_output
-  connection: local
 
 - debug: var=eos_eapi_output
   when: debug