Revert the proxy fix to use the instance proxy
Revert the proxy fix to use the instance proxy

Signed-off-by: Hongxin Zhang <hongxin@cbio.mskcc.org>

Former-commit-id: a628dfeb5901cedf29d406e145bdce1ecf087aa4
alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend