e2e: try to load both kvm modules for Intel and AMD

We should not assume our runner is surely running on top
of AMD machine. It's safe to try to load kvm modules
for both CPUs.

ref.
cybozu-go/fin#154

In addition, avoid unloading these modules beforehand.
Probably it's not necessary.

Signed-off-by: Satoru Takeuchi <satoru.takeuchi@gmail.com>

Author: satoru-takeuchi

.github/actions/set-up-kvm-for-e2e-tests/action.yaml

@@ -23,7 +23,5 @@ runs:
            sudo chmod 777 /var/run/libvirt/libvirt-sock
            sudo ls -la /var/run/libvirt/libvirt-sock
            ls -l /dev/kvm
-           sudo rmmod kvm_amd
-           sudo rmmod kvm
-           sudo modprobe -a kvm
-           sudo modprobe -a kvm_amd
+           # x86 GitHub Runner can be one of Intel and AMD, so try both.
+           sudo modprobe -a kvm_intel || sudo modprobe -a kvm_amd