Merge DatastoreAccess executeRpc and executeAction

Sysrepo now uses the same method for rpc and action.

Change-Id: I3a8211b670189c9724d46d6235e5a68b3107c81a
diff --git a/src/datastore_access.hpp b/src/datastore_access.hpp
index 057c96a..b29e152 100644
--- a/src/datastore_access.hpp
+++ b/src/datastore_access.hpp
@@ -50,8 +50,7 @@
     virtual void createItem(const std::string& path) = 0;
     virtual void deleteItem(const std::string& path) = 0;
     virtual void moveItem(const std::string& path, std::variant<yang::move::Absolute, yang::move::Relative> move) = 0;
-    virtual Tree executeRpc(const std::string& path, const Tree& input) = 0;
-    virtual Tree executeAction(const std::string& path, const Tree& input) = 0;
+    virtual Tree execute(const std::string& path, const Tree& input) = 0;
 
     virtual std::shared_ptr<Schema> schema() = 0;