fix connection gets overridden by network_cli for transport nxapi,eapi net_* modules (#34778)

* fix connection gets overridden by network_cli for transport nxapi,eapi net_* modules

Signed-off-by: Trishna Guha <trishnaguha17@gmail.com>

* Define functions in individual action plugins to avoid code duplication

Signed-off-by: Trishna Guha <trishnaguha17@gmail.com>

* Add net_* eos tests for eapi

Signed-off-by: Trishna Guha <trishnaguha17@gmail.com>

* update plugin code

test/integration/targets/eos_banner/tests/eapi/net_banner.yaml

@@ -0,0 +1,36 @@
+---
+- debug: msg="START eos eapi/net_banner.yaml on connection={{ ansible_connection }}"
+
+# Add minimal testcase to check args are passed correctly to
+# implementation module and module run is successful.
+
+- name: Remove previous motd banner (setup)
+  eos_config:
+    lines: no banner motd
+    authorize: yes
+    provider: "{{ eapi }}"
+
+- name: create motd
+  net_banner:
+    banner: motd
+    text: this is my motd banner configure by net_banner
+    state: present
+    authorize: yes
+    provider: "{{ eapi }}"
+  register: result
+
+- assert:
+    that:
+      - "result.changed == true"
+      - "result.commands.0.cmd == 'banner motd'"
+      - "result.commands.0.input == 'this is my motd banner configure by net_banner'"
+      # Ensure sessions contains epoc. Will fail after 18th May 2033
+      - "'ansible_1' in result.session_name"
+
+- name: Remove previous motd banner (teardown)
+  eos_config:
+    lines: no banner motd
+    authorize: yes
+    provider: "{{ eapi }}"
+
+- debug: msg="END eos eapi/net_banner.yaml on connection={{ ansible_connection }}"