message: Add conditional BZIP2 to test
diff: @@ -1516,6 +1516,7 @@ TEST_F(BPWriteReadSpan, BPWriteRead1D8FillValue)
  }
  }
  +#ifdef ADIOS2_HAVE_BZIP2
  TEST_F(BPWriteReadSpan, BPWriteSpanOperatorException)
  {
  const std::string fname("BPWriteSpanOperatorException.bp");
  @@ -1571,7 +1572,8 @@ TEST_F(BPWriteReadSpan, BPWriteSpanOperatorException)
  {
  bpWriter.BeginStep();
  - // using bzip2, it could have been any operator
  + // using bzip2, it could have been any operator to generate an
  + // exception
  var_r32.AddOperation(
  BZIP2Op, {{adios2::ops::bzip2::key::blockSize100k, "1e-4"}});
  var_r64.AddOperation(
  @@ -1591,6 +1593,7 @@ TEST_F(BPWriteReadSpan, BPWriteSpanOperatorException)
  bpWriter.Close();
  }
  }
  +#endif
  int main(int argc, char **argv)
  {
  