[PATCH] t/lib-httpd: pass through GIT_CONFIG_NOSYSTEM env

We set GIT_CONFIG_NOSYSTEM in our test scripts so that we do
not accidentally read /etc/gitconfig and have it influence
the outcome of the tests. But when running smart-http tests,
Apache will clean the environment, including this variable,
and the "server" side of our http operations will read it.

You can see this breakage by doing something like:

  make
  ./git config --system http.getanyfile false
  make test

which will cause t5561 to fail when it tests the
fallback-to-dumb operation.

We can fix this by instructing Apache to pass through the
variable. Unlike with other variables (e.g., 89c57ab3's
GIT_TRACE), we don't need to set a dummy value to prevent
warnings from Apache. test-lib.sh already makes sure that
GIT_CONFIG_NOSYSTEM is set and exported.

Signed-off-by: Jeff King <redacted>
---
Obviously trivial enough for "maint", but not at all urgent; it has
been this way for ages. I only noticed because I happened to recently
munge my system config to replicate a particular server config which
disables http.getanyfile.

 t/lib-httpd/apache.conf | 1 +
 1 file changed, 1 insertion(+)

diff --git a/t/lib-httpd/apache.conf b/t/lib-httpd/apache.conf
index f667e7c..9317ba0 100644
--- a/t/lib-httpd/apache.conf
+++ b/t/lib-httpd/apache.conf

@@ -74,6 +74,7 @@ PassEnv GIT_VALGRIND_OPTIONS
 PassEnv GNUPGHOME
 PassEnv ASAN_OPTIONS
 PassEnv GIT_TRACE
+PassEnv GIT_CONFIG_NOSYSTEM
 
 Alias /dumb/ www/
 Alias /auth/dumb/ www/auth/dumb/

-- 
2.8.0.rc2.331.ga574393