[folks] Use the key-file backend for writes in general tests.

[Travis Reitter <treitter src gnome org>]

commit ee86dd37f5fdfde94817d953228eb0394ea628d1
Author: Travis Reitter <travis reitter collabora co uk>
Date:   Mon Aug 29 10:58:24 2011 -0700

    Use the key-file backend for writes in general tests.
    
    See commit ef36f347 for more details.

 tests/folks/Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/tests/folks/Makefile.am b/tests/folks/Makefile.am
index 0bfa548..83e6381 100644
--- a/tests/folks/Makefile.am
+++ b/tests/folks/Makefile.am
@@ -56,6 +56,7 @@ TESTS_ENVIRONMENT = \
 	GCONF_DEFAULT_SOURCE_PATH= abs_top_srcdir@/tests/data/gconf.path \
 	FOLKS_BACKEND_PATH=$(BACKEND_UNINST_PATH) \
 	FOLKS_BACKEND_STORE_KEY_FILE_PATH=$(backend_store_key_file) \
+	FOLKS_WRITEABLE_STORE=key-file \
 	AVATAR_FILE_PATH=$(avatar_file) \
 	$(RUN_WITH_PRIVATE_BUS) \
 	--config-file=$(SESSION_CONF) \