feature: mysqld_safe have more NUMACTL options

[Kenny Gryp]

I have worked on a customer case where they want to run multiple MySQL instances and have decided to use specific CPU's for this.

This requires different numactl settings than 'numa_interleave' which currently do not work with mysqld_safe

Attached you can find a modified version that adds 2 options:
 --numa-memory-prefer-node=NODE Set numactl --preferred=NODE
 --numa-cpu-node=NODE Set numactl --cpunodebind=NODE

Maybe a more flexible way is to add numa_arguments, where you can specify a string with any numactl option?

[Raghavendra D Prabhu (raghavendra-prabhu)]

The number and type of numa args is much more than this. Instead
of adding specifics, it would be better to add this as `numa_args` option
wherein people can specify whatever args they want passed to
numactl (there are lot more).

[Shahriyar Rzayev (rzayev-sehriyar)]

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PS-2444