test: Make git-daemon only listen on localhost

No reason to expose a daemon to all interfaces when it is only used for
tests, which connect to localhost anyway.
I'd love to use localhost here instead, but the git-daemon man page points out:

    If IPv6 is not supported, then --listen=hostname is also not
    supported and --listen must be given an IPv4 address.

I don't know of a way to check if git has ipv6 support, but 127.0.0.1
should be around for the foreseeable future

Author: moben

git/test/lib/helper.py

@@ -200,7 +200,7 @@ def remote_repo_creator(self):
             temp_dir = osp(_mktemp())
             # On windows, this will fail ... we deal with failures anyway and default to telling the user to do it
             try:
-                gd = Git().daemon(temp_dir, enable='receive-pack', as_process=True)
+                gd = Git().daemon(temp_dir, enable='receive-pack', listen='127.0.0.1', as_process=True)
                 # yes, I know ... fortunately, this is always going to work if sleep time is just large enough
                 time.sleep(0.5)
             except Exception: