Errors during setting the following sysctl values are ignored:
- vm.overcommit_memory
- vm.panic_on_oom
- kernel.panic
- kernel.panic_on_oops
- kernel.keys.root_maxkeys
- kernel.keys.root_maxbytes
Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>