Correctly return error for run-tests.sh -r

In recent modification introducing the -r option for run-tests.sh,
there was a missing bit: When -r is used, the regression result is
not returned and the outcome is always considered as a success.

Fix it by correctly reporting the status.

Change-Id: If4e3c96d51037fbcf6d9d0e10a3dd3e12da77447
BUG: 1129939
Signed-off-by: Emmanuel Dreyfus <manu@netbsd.org>
Reviewed-on: http://review.gluster.org/10289
Tested-by: NetBSD Build System
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>

run-tests.sh

@@ -228,6 +228,7 @@ function main_and_retry()
 {
     RESFILE=`mktemp /tmp/${0##*/}.XXXXXX` || exit 1
     main "$@" | tee ${RESFILE}
+    RET=$?
 
     FAILED=$( awk '/Failed: /{print $1}' ${RESFILE} )
     if [ "x${FAILED}" != "x" ] ; then
@@ -239,9 +240,11 @@ function main_and_retry()
        echo "       *********************************"
        echo ""
        main ${FAILED}
+       RET=$?
     fi
 
     rm -f ${RESFILE}
+    return ${RET}
 }
 
 echo