docker-compose test continues to flake even after #9961.
Let's try to get some useful data from the failures, by:
* adding -S (--show-error) to curl. With just -s (--silent),
curl is completely quiet. With -S, it displays errors.
(Not in TAP form, but I'm OK with that)
* oops, adding safety checks to the fix from #9961 (it
was inadvertently clobbering the curl exit status)
And, as long as I'm in this code: logformatter was not
highlighting these results, because the '1..N' TAP line
needs to be spit out at the end. Have test-compose emit
a 'TAP' header <http://testanything.org/> and make
logformatter recognize it.
Signed-off-by: Ed Santiago <santiago@redhat.com>
31e31aa9dd