session: implement app_ns deletion

Type: feature

Change-Id: If0edbb21a0283d66c648a9e190d238c8cfa56353
Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
diff --git a/src/vnet/session/session_rules_table.h b/src/vnet/session/session_rules_table.h
index 8679cb8..206ef2f 100644
--- a/src/vnet/session/session_rules_table.h
+++ b/src/vnet/session/session_rules_table.h
@@ -116,6 +116,7 @@
 u8 *session_rules_table_rule_tag (session_rules_table_t * srt, u32 ri,
 				  u8 is_ip4);
 void session_rules_table_init (session_rules_table_t * srt);
+void session_rules_table_free (session_rules_table_t *srt);
 #endif /* SRC_VNET_SESSION_SESSION_RULES_TABLE_H_ */
 /*
  * fd.io coding-style-patch-verification: ON