add mysql_full_version and suffix return variable (#115)

* add mysql_full_version and suffix return variable

add changelog fragment

* rephrase changelog fragment

* Update plugins/modules/mysql_info.py

Co-authored-by: Andrew Klychkov <aaklychkov@mail.ru>

* Add changes as per PR review

* Add tests for new suffix output parameter

Co-authored-by: Andrew Klychkov <aaklychkov@mail.ru>
Co-authored-by: Jorge-Rodriguez <jorge.rodriguez@futurice.com>

tests/unit/plugins/modules/test_mysql_info.py

@@ -0,0 +1,37 @@
+# -*- coding: utf-8 -*-
+
+from __future__ import (absolute_import, division, print_function)
+__metaclass__ = type
+
+import pytest
+
+try:
+    from unittest.mock import MagicMock
+except ImportError:
+    from mock import MagicMock
+
+from ansible_collections.community.mysql.plugins.modules.mysql_info import MySQL_Info
+
+
+@pytest.mark.parametrize(
+    'suffix,cursor_output',
+    [
+        ('mysql', '5.5.1-mysql'),
+        ('log', '5.7.31-log'),
+        ('mariadb', '10.5.0-mariadb'),
+        ('', '8.0.22'),
+    ]
+)
+def test_get_info_suffix(suffix, cursor_output):
+    def __cursor_return_value(input_parameter):
+        if input_parameter == "SHOW GLOBAL VARIABLES":
+            cursor.fetchall.return_value = [{"Variable_name": "version", "Value": cursor_output}]
+        else:
+            cursor.fetchall.return_value = MagicMock()
+
+    cursor = MagicMock()
+    cursor.execute.side_effect = __cursor_return_value
+
+    info = MySQL_Info(MagicMock(), cursor)
+
+    assert info.get_info([], [], False)['version']['suffix'] == suffix