server/upload.py: log backtrace in case of exception
server/upload.py: log backtrace in case of exception

redhat-cip/edeploy,enovance/edeploy,lebauce/edeploy,enovance/edeploy,redhat-cip/edeploy,enovance/edeploy,redhat-cip/edeploy,enovance/edeploy,lebauce/edeploy,redhat-cip/edeploy,lebauce/edeploy,lebauce/edeploy