MINOR: filters: Export the name of known filters
It could be useful to know if some filter is declared on a proxy or if it is
enabled on a stream.
diff --git a/src/cache.c b/src/cache.c
index d52fcf5..834efc1 100644
--- a/src/cache.c
+++ b/src/cache.c
@@ -43,7 +43,7 @@
* messages (legacy implementation) */
#define CACHE_F_HTX 0x00000002 /* The cache is used to store HTX messages */
-static const char *cache_store_flt_id = "cache store filter";
+const char *cache_store_flt_id = "cache store filter";
struct applet http_cache_applet;