Add katib controller flags to developers guide (#1449)
Add katib controller flags to developers guide (#1449)

Signed-off-by: Anna Jung (VMware) <e75c5e512919c52bb6ab3dea432a285bcf1b1cd2@vmware.com>
kubeflow/katib,kubeflow/katib,kubeflow/katib,kubeflow/katib,kubeflow/katib,kubeflow/katib