MINOR: global: Few new struct fields for da module

The name and length of the client cookie, useful for extracting
cookie value's function and a simple bitfield one to define if
set or not.
diff --git a/src/haproxy.c b/src/haproxy.c
index 57db1db..1226932 100644
--- a/src/haproxy.c
+++ b/src/haproxy.c
@@ -181,8 +181,11 @@
 #ifdef USE_DEVICEATLAS
 	.deviceatlas = {
 		.loglevel = DA_SEV_INFO,
-		.useragentid = 0,
 		.jsonpath = 0,
+		.cookiename = 0,
+		.cookienamelen = 0,
+		.useragentid = 0,
+		.daset = 0,
 		.separator = '|',
 	},
 #endif