Extend test coverage for openssl modules (#27548)

* openssl_privatekey: Extend test coverage

Extend the coverage of the integration test for the module
openssl_privatekey.

New tests have been added:

  * passphrase
  * idempotence
  * removal

Co-Authored-By: Pierre-Louis Bonicoli <pierre-louis.bonicoli@gmx.fr>

* openssl_publickey: Extend test coverage

Extend the coverage on the integration test for the module
openssl_publickey.

New tests have been added:

  * OpenSSH format
  * passphrase
  * idempotence
  * removal

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

@@ -20,6 +20,14 @@
     name: pyOpenSSL
   when:  ansible_os_family == 'Darwin'
 
-- name: register openssl version
+- name: register pyOpenSSL version
   command: python -c 'import OpenSSL; print(OpenSSL.__version__)'
   register: pyopenssl_version
+
+- name: register openssl version
+  shell: "openssl version | cut -d' ' -f2"
+  register: openssl_version
+
+- name: register cryptography version
+  command: python -c 'import cryptography; print(cryptography.__version__)'
+  register: cryptography_version