To run the e2e test you should place yourself in .../test/e2e directory, then
$go test -c
which will compile the e2e.test executable in your current directory. Then
./e2e.test --kubeconfig=$HOME/.kube/config
will start the e2e test. Usual ginkgo features are preserved, so if you want to run only the CronWorkflow CRUD tests you may want to run something like:
$./e2e.test --ginkgo.v=true --ginkgo.focus="CronWorkflow CRUD" --kubeconfig=$HOME/.kube/config