PT-191 - add ssl options to DSN

- Updated ssl tests, so they test option --mysql_ssl and DSN

t/pt-table-checksum/ssl.t

@@ -26,7 +26,7 @@ elsif ( $sandbox_version lt '8.0' ) {
    plan skip_all => "Requires MySQL 8.0 or newer";
 }
 else {
-   plan tests => 11;
+   plan tests => 15;
 }
 
 # The sandbox servers run with lock_wait_timeout=3 and it's not dynamic
@@ -102,6 +102,39 @@ like(
    'Checksums the table (issue 388)'
 );
 
+($output, $exit_code) = full_output(
+   sub { pt_table_checksum::main(
+         @args,
+         qw(--host 127.1 --port 12345 --user sha256_user),
+         qw(--password sha256_user%password --mysql_ssl 1),
+         qw(-d test)) },
+   stderr => 1,
+);
+
+is(
+   $exit_code,
+   0,
+   "No error for user, identified with caching_sha2_password with option --mysql_ssl"
+) or diag($output);
+
+unlike(
+   $output,
+   qr/Authentication plugin 'caching_sha2_password' reported error: Authentication requires secure connection./,
+   'No secure connection error with option --mysql_ssl'
+) or diag($output);
+
+unlike(
+   $output,
+   qr/Use of uninitialized value/,
+   'No error (issue 388) with option --mysql_ssl'
+);
+
+like(
+   $output,
+   qr/^\S+\s+0\s+0\s+1\s+0\s+1\s+/m,
+   'Checksums the table (issue 388) with option --mysql_ssl'
+);
+
 ($output, $exit_code) = full_output(
    sub { 
       pt_table_checksum::main(