Trying AMDGPU-PRO 17.10 On Ubuntu 17.04

In early April AMD released the AMDGPU-PRO 17.10 driver as their first hybrid proprietary driver update in some time. With this update came support for Ubuntu 16.04.2 (and also 16.10, unofficially) but to little surprise it doesn't work out-of-the-box with this week's Ubuntu 17.04 release. But it can be made to work...