http tests: don't rely on "hook/post-update.sample"

Change code added in a876793 (test: rename http fetch and push
test files, 2014-02-06) to stop relying on the "exec git
update-server-info" in "templates/hooks--post-update.sample", let's
instead inline the expected hook in the test itself.

Signed-off-by: Ævar Arnfjörð Bjarmason <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: avar

t/t5540-http-push-webdav.sh

@@ -42,7 +42,9 @@ test_expect_success 'setup remote repository' '
 	git clone --bare test_repo test_repo.git &&
 	cd test_repo.git &&
 	git --bare update-server-info &&
-	mv hooks/post-update.sample hooks/post-update &&
+	test_hook --setup post-update <<-\EOF &&
+	exec git update-server-info
+	EOF
 	ORIG_HEAD=$(git rev-parse --verify HEAD) &&
 	cd - &&
 	mv test_repo.git "$HTTPD_DOCUMENT_ROOT_PATH"