Tests: relaxed proxy_cache_lock.t nolock tests to fix on Solaris.

Assumed that the order of responses being arrived in nolock case may be ignored.
An important part of such case is that the only last response should be cached.

Author: pluknet

proxy_cache_lock.t

@@ -113,12 +113,10 @@ for my $i (1 .. 3) {
 	$sockets[$i] = http_get('/nolock', start => 1);
 }
 
-like(http_end($sockets[1]), qr/request 1/, 'nolock - first');
+$rest = join '', map { http_end($sockets[$_]) } (1 .. 3);
 
-$rest = http_end($sockets[2]);
-$rest .= http_end($sockets[3]);
-
-like($rest, qr/request (2.*request 3|3.*request 2)/s, 'nolock - rest');
+like($rest, qr/request 1/, 'nolock - first');
+like($rest, qr/request 3/, 'nolock - last');
 like(http_get('/nolock'), qr/request 3/, 'nolock - last cached');
 
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