Add ios_banner module (#22687)

With unit and integration tests.

test/integration/targets/ios_banner/aliases

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+network/ci

test/integration/targets/ios_banner/defaults/main.yaml

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+---
+testcase: "*"

test/integration/targets/ios_banner/meta/main.yml

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+dependencies:
+  - prepare_ios_tests

test/integration/targets/ios_banner/tasks/cli.yaml

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+---
+- name: collect all cli test cases
+  find:
+    paths: "{{ role_path }}/tests/cli"
+    patterns: "{{ testcase }}.yaml"
+  register: test_cases
+
+- name: set test_items
+  set_fact: test_items="{{ test_cases.files | map(attribute='path') | list }}"
+
+- name: run test case
+  include: "{{ test_case_to_run }}"
+  with_items: "{{ test_items }}"
+  loop_control:
+    loop_var: test_case_to_run

test/integration/targets/ios_banner/tasks/main.yaml

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+---
+- { include: cli.yaml, tags: ['cli'] }

test/integration/targets/ios_banner/tests/cli/basic-login.yaml

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+---
+
+- name: setup - remove login
+  ios_banner:
+    banner: login
+    state: absent
+    authorize: yes
+    provider: "{{ cli }}"
+
+- name: Set login
+  ios_banner:
+    banner: login
+    text: |
+      this is my login banner
+      that has a multiline
+      string
+    state: present
+    authorize: yes
+    provider: "{{ cli }}"
+  register: result
+
+- debug:
+    msg: "{{ result }}"
+
+- assert:
+    that:
+      - "result.changed == true"
+      - "'this is my login banner' in result.commands"
+      - "'that has a multiline' in result.commands"
+
+- name: Set login again (idempotent)
+  ios_banner:
+    banner: login
+    text: |
+      this is my login banner
+      that has a multiline
+      string
+    state: present
+    authorize: yes
+    provider: "{{ cli }}"
+  register: result
+
+- assert:
+    that:
+      - "result.changed == false"
+      - "result.commands | length == 0"
+
+
+# FIXME add in tests for everything defined in docs
+# FIXME Test state:absent + test:
+# FIXME Without powers ensure "privileged mode required"

test/integration/targets/ios_banner/tests/cli/basic-motd.yaml

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+---
+
+- name: setup - remove motd
+  ios_banner:
+    banner: motd
+    state: absent
+    authorize: yes
+
+- name: Set motd
+  ios_banner:
+    banner: motd
+    text: |
+      this is my motd banner
+      that has a multiline
+      string
+    state: present
+    authorize: yes
+    provider: "{{ cli }}"
+  register: result
+
+- debug:
+    msg: "{{ result }}"
+
+- assert:
+    that:
+      - "result.changed == true"
+      - "'this is my motd banner' in result.commands"
+      - "'that has a multiline' in result.commands"
+
+- name: Set motd again (idempotent)
+  ios_banner:
+    banner: motd
+    text: |
+      this is my motd banner
+      that has a multiline
+      string
+    state: present
+    authorize: yes
+    provider: "{{ cli }}"
+  register: result
+
+- assert:
+    that:
+      - "result.changed == false"
+      - "result.commands | length == 0"
+
+
+# FIXME add in tests for everything defined in docs
+# FIXME Test state:absent + test:
+# FIXME Without powers ensure "privileged mode required"

test/integration/targets/ios_banner/tests/cli/basic-no-login.yaml

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+---
+- name: Setup
+  ios_banner:
+    banner: login
+    text: |
+      Junk login banner
+      over multiple lines
+    state: present
+    authorize: yes
+    provider: "{{ cli }}"
+
+- name: remove login
+  ios_banner:
+    banner: login
+    state: absent
+    authorize: yes
+    provider: "{{ cli }}"
+  register: result
+
+- debug:
+    msg: "{{ result }}"
+
+- assert:
+    that:
+      - "result.changed == true"
+      - "'no banner login' in result.commands" # does this break due to "contains?"
+
+- name: remove login (idempotent)
+  ios_banner:
+    banner: login
+    state: absent
+    authorize: yes
+    provider: "{{ cli }}"
+  register: result
+
+- assert:
+    that:
+      - "result.changed == false"
+      - "result.commands | length == 0"
+
+
+# FIXME add in tests for everything defined in docs
+# FIXME Test state:absent + test:
+# FIXME Without powers ensure "privileged mode required"