* Add non-standard kernel installation for RockyLinux 8
* Add test VM in molecule tests for Rocky8 non-standard installation method
* Rename non-standard to dkms as an install method
* Automate installation process : kmod if possible, dkms as fallback
* BUGFIX : dmks installation needs EPEL repo for wireguard-tools
* Molecule : install ELRepo mainline kernel for rocky8 dkms installation
* Revert "Automate installation process : kmod if possible, dkms as fallback"
This reverts commit 822fbcbe5d8c484ecd984df57fd170749d6b97c1.
* Molecule : add wireguard_rockylinux8_installation_method variable to test-wg-rocky8-dkms