Added docs fragment for proxysql (#32502)

* Added docs fragment for proxysql

* Added formatting for option names, and bool types

* Updated proxysql modules to use doc fragments

lib/ansible/utils/module_docs_fragments/proxysql.py

@@ -0,0 +1,48 @@
+# Copyright: (c) 2017, Ansible Project
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt
+
+
+class ModuleDocFragment(object):
+
+    # Documentation fragment for ProxySQL connectivity
+    CONNECTIVITY = '''
+options:
+  login_user:
+    description:
+      - The username used to authenticate to ProxySQL admin interface.
+    default: None
+  login_password:
+    description:
+      - The password used to authenticate to ProxySQL admin interface.
+    default: None
+  login_host:
+    description:
+      - The host used to connect to ProxySQL admin interface.
+    default: '127.0.0.1'
+  login_port:
+    description:
+      - The port used to connect to ProxySQL admin interface.
+    default: 6032
+  config_file:
+    description:
+      - Specify a config file from which I(login_user) and I(login_password)
+        are to be read.
+    default: ''
+requirements:
+   - MySQLdb
+'''
+
+    # Documentation fragment for managing ProxySQL configuration
+    MANAGING_CONFIG = '''
+options:
+  save_to_disk:
+    description:
+      - Save config to sqlite db on disk to persist the configuration.
+    type: bool
+    default: True
+  load_to_runtime:
+    description:
+      - Dynamically load config to runtime memory.
+    type: bool
+    default: True
+'''