osd: unify sources of no{up,down,in,out} flags into singleton helpers

osd: unify sources of no{up,down,in,out} flags into singleton helpers

Currently there are various ways to set no{up,down,in,out} flags,
by osd, by crush node, or by device class.

Use traditional is_no{up,down,in,out} helper to catch-all,
and add special wrappers for certain internal consumers.

This way osd won't ignore the noup flag set by the new crush node,
device class, or any future sources.

Signed-off-by: xie xingguo <xie.xingguo@zte.com.cn>