make test ignore NDB injector thread


mysql-test/r/not_embedded_server.result:
  Use INFORMATION_SCHEMA for getting PROCESSLIST so we can exclude the
  NDB Binlog Injector thread as it may/may not be running depending on
  if --with-ndbcluster is specified to mysql-test-run
mysql-test/t/not_embedded_server.test:
  Use INFORMATION_SCHEMA for getting PROCESSLIST so we can exclude the
  NDB Binlog Injector thread as it may/may not be running depending on
  if --with-ndbcluster is specified to mysql-test-run