[meshcop] update Border Agent Locator TLV on keep alives (#2596)
[meshcop] update Border Agent Locator TLV on keep alives (#2596)


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