MySQL: Add option to allow cleartext passwords (#63232)

* Add "Allow Cleartext Passwords" checkbox to MySQL connection settings

* Fix lint issues

* Add docs

* Add line break and bold text

---------

Co-authored-by: Zoltán Bedi <zoltan.bedi@gmail.com>

public/app/plugins/datasource/mysql/configuration/ConfigurationEditor.tsx

@@ -48,7 +48,7 @@ export const ConfigurationEditor = (props: DataSourcePluginOptionsEditorProps<My
   };
 
   const WIDTH_SHORT = 15;
-  const WIDTH_MEDIUM = 22;
+  const WIDTH_MEDIUM = 25;
   const WIDTH_LONG = 40;
 
   return (
@@ -150,6 +150,26 @@ export const ConfigurationEditor = (props: DataSourcePluginOptionsEditorProps<My
             value={jsonData.tlsSkipVerify || false}
           ></InlineSwitch>
         </InlineField>
+        <InlineField
+          labelWidth={WIDTH_MEDIUM}
+          tooltip={
+            <span>
+              Allows using the cleartext client side plugin if required by an account, such as one defined with the PAM
+              authentication plugin. Sending passwords in clear text may be a security problem in some configurations.
+              To avoid problems if there is any possibility that the password would be intercepted, clients should
+              connect to MySQL Server using a method that protects the password. Possibilities include TLS / SSL, IPsec,
+              or a private network.
+            </span>
+          }
+          htmlFor="allowCleartextPasswords"
+          label="Allow Cleartext Passwords"
+        >
+          <InlineSwitch
+            id="allowCleartextPasswords"
+            onChange={onSwitchChanged('allowCleartextPasswords')}
+            value={jsonData.allowCleartextPasswords || false}
+          ></InlineSwitch>
+        </InlineField>
       </FieldSet>
 
       {config.secureSocksDSProxyEnabled && (

public/app/plugins/datasource/mysql/types.ts

@@ -1,5 +1,7 @@
 import { SQLOptions, SQLQuery } from 'app/features/plugins/sql/types';
 
-export interface MySQLOptions extends SQLOptions {}
+export interface MySQLOptions extends SQLOptions {
+  allowCleartextPasswords?: boolean;
+}
 
 export interface MySQLQuery extends SQLQuery {}