New module: Add support for Arista EOS vlan (network/eos/eos_vlan) (#25355)

* WIP Add eos_vlan module

* Fix docstrings

* Fix pep8 issues

* Add active/suspend states logic

* Add integration tests for eos_vlan

* Fix map_config_to_obj on EAPI

* Sixify iteritems

* Add platform agnostic net_vlan integration tests

test/integration/targets/eos_vlan/tests/cli/basic.yaml

@@ -0,0 +1,68 @@
+---
+
+- name: setup - remove vlan
+  eos_vlan:
+    vlan_id: 4000
+    name: test-vlan
+    state: absent
+    authorize: yes
+    provider: "{{ cli }}"
+
+- name: Create vlan
+  eos_vlan:
+    vlan_id: 4000
+    name: test-vlan
+    state: present
+    authorize: yes
+    provider: "{{ cli }}"
+  register: result
+
+- debug:
+    msg: "{{ result }}"
+
+- assert:
+    that:
+      - "result.changed == true"
+      - "'vlan 4000' in result.commands"
+      - "'name test-vlan' in result.commands"
+      # Ensure sessions contains epoc. Will fail after 18th May 2033
+      - "'ansible_1' in result.session_name"
+
+- name: Create vlan again (idempotent)
+  eos_vlan:
+    vlan_id: 4000
+    name: test-vlan
+    state: present
+    authorize: yes
+    provider: "{{ cli }}"
+  register: result
+
+- assert:
+    that:
+      - "result.changed == false"
+      - "result.commands | length == 0"
+      # Ensure sessions contains epoc. Will fail after 18th May 2033
+      - "result.session_name is not defined"
+
+- name: Change vlan name and state
+  eos_vlan:
+    vlan_id: 4000
+    name: test-vlan2
+    state: suspend
+    authorize: yes
+    provider: "{{ cli }}"
+  register: result
+
+- assert:
+    that:
+      - "result.changed == true"
+      - "'vlan 4000' in result.commands"
+      - "'name test-vlan2' in result.commands"
+      - "'state suspend' in result.commands"
+      # Ensure sessions contains epoc. Will fail after 18th May 2033
+      - "'ansible_1' in result.session_name"
+
+
+# FIXME add in tests for everything defined in docs
+# FIXME Test state:absent + test:
+# FIXME Without powers ensure "privileged mode required"