Allow '_SURVIVAL' word to occur in custom survival clin vars
Allow '_SURVIVAL' word to occur in custom survival clin vars


Former-commit-id: 3d57f5402de85a5cca50ec56fd98af5bc09cb4ad
cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend,alisman/cbioportal-frontend,alisman/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,cBioPortal/cbioportal-frontend,cBioPortal/cbioportal-frontend