create subnet in save_slice(), cleanup subnet in delete_slice()
create subnet in save_slice(), cleanup subnet in delete_slice()

cboling/xos,xmaruto/mcord,wathsalav/xos,zdw/xos,opencord/xos,wathsalav/xos,zdw/xos,zdw/xos,zdw/xos,open-cloud/xos,open-cloud/xos,wathsalav/xos,cboling/xos,jermowery/xos,xmaruto/mcord,xmaruto/mcord,jermowery/xos,xmaruto/mcord,cboling/xos,cboling/xos,cboling/xos,jermowery/xos,opencord/xos,wathsalav/xos,opencord/xos,open-cloud/xos,jermowery/xos