Use sslmode option instead of ssl_mode for MySQL command connections

In f36c261a44 support for the ssl-mode option was added for MySQL when
using the dbconsole command and MySQLDatabaseTasks.
However, the mysql2 gem uses `ssl_mode` instead of `sslmode`:

https://github.com/brianmario/mysql2/blob/ba4d46551d132492b34205cdb8fa224c92765bef/lib/mysql2/client.rb#L51

As `ssl_mode` is what should be used in the database.yml configuration
for MySQL we should use it as well for the dbconsole command and
MySQLDatabaseTasks.

Co-authored-by: Chris Gunther <[email protected]>

Author: p8

activerecord/lib/active_record/tasks/mysql_database_tasks.rb

@@ -95,7 +95,7 @@ def prepare_command_options
             sslcapath: "--ssl-capath",
             sslcipher: "--ssl-cipher",
             sslkey:    "--ssl-key",
-            sslmode:   "--ssl-mode"
+            ssl_mode:  "--ssl-mode"
           }.filter_map { |opt, arg| "#{arg}=#{configuration_hash[opt]}" if configuration_hash[opt] }
 
           args

railties/lib/rails/commands/dbconsole/dbconsole_command.rb

@@ -31,7 +31,7 @@ def start
           sslcapath: "--ssl-capath",
           sslcipher: "--ssl-cipher",
           sslkey: "--ssl-key",
-          sslmode: "--ssl-mode"
+          ssl_mode: "--ssl-mode"
         }.filter_map { |opt, arg| "#{arg}=#{config[opt]}" if config[opt] }
 
         if config[:password] && @options[:include_password]

railties/test/commands/dbconsole_test.rb

@@ -127,7 +127,7 @@ def test_mysql_full
       sslcapath: "/path/to/cacerts",
       sslcipher: "DHE-RSA-AES256-SHA",
       sslkey:    "/path/to/client-key.pem",
-      sslmode:   "VERIFY_IDENTITY"
+      ssl_mode:  "VERIFY_IDENTITY"
     )
     assert_not aborted
     assert_equal [