PT-191 - add ssl options to DSN

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

t/pt-variable-advisor/ssl.t

@@ -81,6 +81,30 @@ unlike(
    "No innodb_max_dirty_pages_pct warning (bug 1168106)"
 );
 
+($output, $exit_code) = full_output(
+   sub { pt_variable_advisor::main("${dsn}",
+         qw(--user sha256_user --password sha256_user%password --mysql_ssl 1)) },
+   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(
+   $output,
+   qr/innodb_max_dirty_pages_pct/,
+   "No innodb_max_dirty_pages_pct warning (bug 1168106) with option --mysql_ssl"
+);
+
 ($output, $exit_code) = full_output(
    sub { pt_variable_advisor::main("F=t/pt-archiver/samples/pt-191.cnf,${dsn},u=sha256_user,p=sha256_user%password,s=1") },
    stderr => 1,