Expose load_spec (#4556)

substrate/client/cli/src/lib.rs

@@ -128,7 +128,8 @@ fn generate_node_name() -> String {
 	result
 }
 
-fn load_spec<F, G, E>(cli: &SharedParams, factory: F) -> error::Result<ChainSpec<G, E>> where
+/// Load spec give shared params and spec factory.
+pub fn load_spec<F, G, E>(cli: &SharedParams, factory: F) -> error::Result<ChainSpec<G, E>> where
 	G: RuntimeGenesis,
 	E: ChainSpecExtension,
 	F: FnOnce(&str) -> Result<Option<ChainSpec<G, E>>, String>,