tasks/kernel: fix missing arg to install_kernel
tasks/kernel: fix missing arg to install_kernel

Fixes: https://tracker.ceph.com/issues/52944
Signed-off-by: Patrick Donnelly <d35c2028e065409a3eff47e1b4cba347a9379b4b@redhat.com>

ceph/teuthology,ktdreyer/teuthology,ktdreyer/teuthology,ceph/teuthology