Make create/delete accept list instance paths

Change-Id: I5991e1377ebc0edcfc3f8dbc60066a580314a51a
diff --git a/src/sysrepo_access.hpp b/src/sysrepo_access.hpp
index 13b4ace..76e9088 100644
--- a/src/sysrepo_access.hpp
+++ b/src/sysrepo_access.hpp
@@ -32,6 +32,8 @@
     void setLeaf(const std::string& path, leaf_data_ value) override;
     void createPresenceContainer(const std::string& path) override;
     void deletePresenceContainer(const std::string& path) override;
+    void createListInstance(const std::string& path) override;
+    void deleteListInstance(const std::string& path) override;
     std::string fetchSchema(const char* module, const char* revision, const char* submodule);
     std::vector<std::string> listImplementedSchemas();