Tests: better handle various configure arguments.
diff --git a/ssi-include-big.t b/ssi-include-big.t
index 3e95153..2e0338a 100644
--- a/ssi-include-big.t
+++ b/ssi-include-big.t
@@ -21,7 +21,7 @@
 select STDERR; $| = 1;
 select STDOUT; $| = 1;
 
-my $t = Test::Nginx->new()->has('rewrite')->has('gzip')->plan(8);
+my $t = Test::Nginx->new()->has(qw/http ssi rewrite gzip proxy/)->plan(8);
 
 $t->write_file_expand('nginx.conf', <<'EOF');