MDEV-9038 Binlog encryption tests

- created binlog_encryption test suite and added it to the default list
- moved some tests from rpl, binlog and multisource suites to extra
  so that they could be re-used in different suites
- made minor changes in include files

mysql-test/suite/binlog_encryption/suite.pm

@@ -0,0 +1,18 @@
+package My::Suite::BinlogEncryption;
+
+@ISA = qw(My::Suite);
+
+return "No file key management plugin" unless defined $ENV{FILE_KEY_MANAGEMENT_SO};
+
+sub skip_combinations {
+  my @combinations;
+
+  $skip{'encryption_algorithms.combinations'} = [ 'ctr' ]
+    unless $::mysqld_variables{'version-ssl-library'} =~ /OpenSSL (\S+)/
+       and $1 ge "1.0.1";
+
+  %skip;
+}
+
+bless { };
+