Add openssh_keypair module (#46436)

* add openssh_keypair module

test/integration/targets/openssh_keypair/aliases

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+shippable/posix/group1
+destructive

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

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+dependencies:
+  - setup_ssh_keygen

test/integration/targets/openssh_keypair/tasks/main.yml

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+- name: Generate privatekey1 - standard
+  connection: local
+  openssh_keypair:
+    path: '{{ output_dir }}/privatekey1'
+
+- name: Generate privatekey2 - size 2048
+  openssh_keypair:
+    path: '{{ output_dir }}/privatekey2'
+    size: 2048
+
+- name: Generate privatekey3 - type dsa
+  openssh_keypair:
+    path: '{{ output_dir }}/privatekey3'
+    type: dsa
+
+- name: Generate privatekey4 - standard
+  openssh_keypair:
+    path: '{{ output_dir }}/privatekey4'
+
+- name: Delete privatekey4 - standard
+  openssh_keypair:
+    state: absent
+    path: '{{ output_dir }}/privatekey4'
+
+- import_tasks: ../tests/validate.yml

test/integration/targets/openssh_keypair/tests/validate.yml

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+- name: Validate privatekey1 (test - RSA key with size 4096 bits)
+  shell: "ssh-keygen -lf {{ output_dir }}/privatekey1 | grep -o -E '^[0-9]+'"
+  register: privatekey1
+
+- name: Validate privatekey1 (assert - RSA key with size 4096 bits)
+  assert:
+    that:
+      - privatekey1.stdout == '4096'
+
+
+- name: Validate privatekey2 (test - RSA key with size 2048 bits)
+  shell: "ssh-keygen -lf {{ output_dir }}/privatekey2 | grep -o -E '^[0-9]+'"
+  register: privatekey2
+
+- name: Validate privatekey2 (assert - RSA key with size 2048 bits)
+  assert:
+    that:
+      - privatekey2.stdout == '2048'
+
+
+- name: Validate privatekey3 (test - DSA key with size 1024 bits)
+  shell: "ssh-keygen -lf {{ output_dir }}/privatekey3 | grep -o -E '^[0-9]+'"
+  register: privatekey3
+
+- name: Validate privatekey3 (assert - DSA key with size 4096 bits)
+  assert:
+    that:
+      - privatekey3.stdout == '1024'
+
+
+- name: Validate privatekey4 (test - Ensure key has been removed)
+  stat:
+    path: '{{ output_dir }}/privatekey4'
+  register: privatekey4
+
+- name: Validate privatekey4 (assert - Ensure key has been removed)
+  assert:
+    that:
+      - privatekey4.stat.exists == False

test/integration/targets/setup_ssh_keygen/tasks/main.yml

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+- name: Include OS-specific variables
+  include_vars: '{{ ansible_os_family }}.yml'
+  when: not ansible_os_family == "Darwin" and not ansible_os_family == "FreeBSD"
+
+- name: Install ssh-keygen
+  package:
+    name: '{{ openssh_client_package_name }}'
+  when: not ansible_os_family == "Darwin" and not ansible_os_family == "FreeBSD"

test/integration/targets/setup_ssh_keygen/vars/Debian.yml

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+openssh_client_package_name: openssh-client

test/integration/targets/setup_ssh_keygen/vars/RedHat.yml

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+openssh_client_package_name: openssh-clients

test/integration/targets/setup_ssh_keygen/vars/Suse.yml

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+openssh_client_package_name: openssh