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_config/tests/cli/src_basic.yaml

@@ -1,5 +1,5 @@
 ---
-- debug: msg="START cli/src_basic.yaml"
+- debug: msg="START cli/src_basic.yaml on connection={{ ansible_connection }}"
 
 - name: setup
   eos_config:
@@ -10,11 +10,13 @@
       - interface Ethernet2
     match: none
     provider: "{{ cli }}"
+  become: yes
 
 - name: configure device with config
   eos_config:
     src: basic/config.j2
     provider: "{{ cli }}"
+  become: yes
   register: result
 
 - assert:
@@ -28,6 +30,7 @@
     src: basic/config.j2
     defaults: yes
     provider: "{{ cli }}"
+  become: yes
   register: result
 
 - assert:
@@ -36,4 +39,4 @@
 # https://github.com/ansible/ansible-modules-core/issues/4807
       - "result.updates is not defined"
 
-- debug: msg="END cli/src_basic.yaml"
+- debug: msg="END cli/src_basic.yaml on connection={{ ansible_connection }}"