forked from rook/rook
After adopting `ceph-volume`, secret key for user osd.x will be generated by `ceph-volume` and thus method `generateKeyring` is not necessary anymore. Executing ceph command takes extra half of second to complete, executing it in serial is rather expensive, remove it for better performance. Signed-off-by: shenjiatong <yshxxsjt715@gmail.com>