test-utils: add chain-spec-builder cli (#1061)

* test-utils: add chain-spec-builder cli

* style changes, mostly indentation

* fix padding

* add issue to todo

* more style fixes

* share seed padding with keystore

* fix master rebase error

substrate/core/service/src/lib.rs

@@ -139,10 +139,12 @@ impl<Components> Service<Components>
 		let executor = NativeExecutor::new();
 
 		let mut keystore = Keystore::open(config.keystore_path.as_str().into())?;
+
+		// This is meant to be for testing only
+		// FIXME: remove this - https://github.com/paritytech/substrate/issues/1063
 		for seed in &config.keys {
 			keystore.generate_from_seed(seed)?;
 		}
-
 		// Keep the public key for telemetry
 		let public_key = match keystore.contents()?.get(0) {
 			Some(public_key) => public_key.clone(),