PT-191 - add ssl options to DSN

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

t/pt-index-usage/ssl.t

@@ -39,6 +39,7 @@ $sb->do_as_root(
    'source',
    q/CREATE USER IF NOT EXISTS sha256_user@'%' IDENTIFIED WITH caching_sha2_password BY 'sha256_user%password' REQUIRE SSL/,
    q/GRANT ALL ON sakila.* TO sha256_user@'%'/,
+   q/GRANT ALL ON test.* TO sha256_user@'%'/,
 );
 
 # This query doesn't use indexes so there's an unused PK and
@@ -95,6 +96,46 @@ like(
    'A simple query that does not use any indexes',
 ) or diag($output);
 
+($output, $exit_code) = full_output(
+   sub {
+      pt_index_usage::main(
+         @args,
+         qw(--host=127.1 --port=12345 --user=sha256_user --password=sha256_user%password --mysql_ssl=1),
+         qw(--create-save-results-database),
+         '--save-results-database=h=127.1,P=12345,u=sha256_user,p=sha256_user%password,s=1,D=test',
+         "$trunk/$samples/slow001.txt")
+   },
+   stderr => 1,
+);
+
+is(
+   $exit_code,
+   0,
+   "No error for user, identified with caching_sha2_password via DSN"
+) or diag($output);
+
+unlike(
+   $output,
+   qr/Authentication plugin 'caching_sha2_password' reported error: Authentication requires secure connection./,
+   'No secure connection error with DSN'
+) or diag($output);
+
+$output = `/tmp/12345/use -N -e "SHOW TABLES FROM test"`;
+
+my $expected = <<EOF;
+index_alternatives
+index_usage
+indexes
+queries
+tables
+EOF
+
+is(
+   $output,
+   $expected, 
+   'Results are saved'
+) or diag($output);
+
 @args = ('-F', "$trunk/t/pt-archiver/samples/pt-191.cnf");
 ($output, $exit_code) = full_output(
    sub {