[router-table] clear router table when changing partitions (#2809)
[router-table] clear router table when changing partitions (#2809)


LeZhang2016/openthread,librasungirl/openthread,chshu/openthread,erja-gp/openthread,srickardti/openthread,jwhui/openthread,lanyuwen/openthread,LeZhang2016/openthread,LeZhang2016/openthread,chshu/openthread,bukepo/openthread,turon/openthread,chshu/openthread,abtink/openthread,LeZhang2016/openthread,openthread/openthread,gandreello/openthread,gandreello/openthread,turon/openthread,jwhui/openthread,erja-gp/openthread,lanyuwen/openthread,openthread/openthread,LeZhang2016/openthread,librasungirl/openthread,lanyuwen/openthread,srickardti/openthread,openthread/openthread,gandreello/openthread,turon/openthread,turon/openthread,bukepo/openthread,chshu/openthread,erja-gp/openthread,jwhui/openthread,lanyuwen/openthread,gandreello/openthread,bukepo/openthread,lanyuwen/openthread,srickardti/openthread,openthread/openthread,abtink/openthread,abtink/openthread,abtink/openthread,bukepo/openthread,LeZhang2016/openthread,erja-gp/openthread,srickardti/openthread,librasungirl/openthread,librasungirl/openthread,erja-gp/openthread,lanyuwen/openthread,gandreello/openthread,chshu/openthread,gandreello/openthread,chshu/openthread,erja-gp/openthread,jwhui/openthread