Modify default value of high_pri_pool_ratio (#5576)
Modify default value of high_pri_pool_ratio (#5576)

Signed-off-by: pentium3 <b788c835aa2e2630c019480ee951e8e1cf1e557c@msn.com>
pingcap/tikv,pingcap/tikv,BusyJay/tikv,BusyJay/tikv,BusyJay/tikv,BusyJay/tikv,c4pt0r/tikv