REGTESTS: Fix http_abortonclose.vtc to support -1 status for some client aborts

Since the commit 5e702fcad ("MINOR: http-ana: Use -1 status for client
aborts during queuing and connect"), -1 status is reported in the log
message when the client aborts during queuing and
connect. http_abortonclose.vtc script must be update accordingly.
1 file changed