fix: Add keyboard drivers to CI guest kernels

Firecracker supports sending a CTRL+ALT+DEL event to the guest, to
trigger a reboot, and we had an integration test for this. However, the
integration test was broken (see #5050), and actually, our guest kernels
dont have the necessary drivers compiled in to actually receive the
CTRL+ALT+DEL.

Fix this by actually enabling the relavant Kconfigs. We don't re-build
the artifacts just yet, as it'll happen anyway in a few days when we
branch off the next release.

Suggested-by: Riccardo Mancini <[email protected]>
Signed-off-by: Patrick Roy <[email protected]>

Author: roypat

resources/guest_configs/ci.config

@@ -5,3 +5,10 @@ CONFIG_SQUASHFS_ZSTD=y
 # aarch64 only TBD split into a separate file
 CONFIG_DEVMEM=y
 # CONFIG_ARM64_ERRATUM_3194386 is not set
+# Needed for CTRL+ALT+DEL support
+CONFIG_SERIO=y
+CONFIG_SERIO_I8042=y
+CONFIG_SERIO_LIBPS2=y
+CONFIG_SERIO_GSCPS2=y
+CONFIG_KEYBOARD_ATKBD=y
+CONFIG_INPUT_KEYBOARD=y