PT-2340 - Support MySQL 8.4

- Removed offensive terminology from library files and their tests
- Removed unused sandbox/prove2junit.pl
- Added option mysql_ssl to DSN and possibility to have DSN of multiple letters

lib/PerconaTest.pm

@@ -68,6 +68,9 @@ our @EXPORT      = qw(
    $sandbox_version
    $can_load_data
    $test_diff
+   $source_name
+   $source_status
+   $replica_name
 );
 
 our $trunk = $ENV{PERCONA_TOOLKIT_BRANCH};
@@ -78,6 +81,15 @@ eval {
    $sandbox_version = $v if $v;
 };
 
+our $source_name = 'source';
+our $source_status = 'binary log';
+our $replica_name = 'replica';
+if ( $sandbox_version < '8.1' || ( $ENV{FORK} || "" eq 'mariadb' ) ) {
+   $source_name = 'master';
+   $source_status = 'master';
+   $replica_name = 'slave';
+}
+
 our $can_load_data = can_load_data();
 
 our $test_diff = '';
@@ -137,6 +149,12 @@ our $dsn_opts = [
       dsn  => 'user',
       copy => 1,
    },
+   {
+      key  => 'mysql_ssl',
+      desc => 'Use SSL',
+      dsn  => 'mysql_ssl',
+      copy => 1,
+   },
 ];
 
 # Runs code, captures and returns its output.