Validate exits with zero when there are errors

[ddsharpe]

Shouldn't this exit with a non-zero status?

####<Aug 21, 2019 9:08:00 PM> <__perform_model_file_validation> <Validation of /u01/wdt/models/bad_domain.yaml completed with 1 error(s), 0 warning(s) and 0 info(s) items>

Errors: 1
NOTaREALAttrib is not one of the attribute names allowed in model location topology:/Server/m1

validateModel.sh completed successfully (exit code = 0)