MINOR: http-rules: Add missing actions in http-after-response ruleset

This patch adds the support of following actions in the http-after-response
ruleset:

  * set-map, del-map and del-acl
  * set-log-level
  * sc-inc-gpc, sc-inc-gpc0 and set-inc-gpc1
  * sc-inc-gpt and sc-set-gpt0

This patch should solve the issue #1980.
diff --git a/src/stream.c b/src/stream.c
index 9906b21..006c229 100644
--- a/src/stream.c
+++ b/src/stream.c
@@ -3942,6 +3942,13 @@
 
 INITCALL1(STG_REGISTER, http_res_keywords_register, &stream_http_res_keywords);
 
+static struct action_kw_list stream_http_after_res_actions =  { ILH, {
+	{ "set-log-level", stream_parse_set_log_level },
+	{ /* END */ }
+}};
+
+INITCALL1(STG_REGISTER, http_after_res_keywords_register, &stream_http_after_res_actions);
+
 static int smp_fetch_cur_server_timeout(const struct arg *args, struct sample *smp, const char *km, void *private)
 {
 	smp->flags = SMP_F_VOL_TXN;