Make node-template in sync with node. (#3422)

* Make node-template in sync with node.

* Update service.rs

* Updated babe constants.

* Added SignedExtra for CheckVersion in node-template and subkey.

* Added CheckVersion SignedExtra for node.

* Fixed tests.

* Try fix integration test.

* Attempt 2 at fixing integration test.

* Update node-template/runtime/src/lib.rs

substrate/subkey/src/main.rs

@@ -97,6 +97,7 @@ fn execute<C: Crypto>(matches: clap::ArgMatches) where
 {
 	let extra = |i: Index, f: Balance| {
 		(
+			system::CheckVersion::<Runtime>::new(),
 			system::CheckGenesis::<Runtime>::new(),
 			system::CheckEra::<Runtime>::from(Era::Immortal),
 			system::CheckNonce::<Runtime>::from(i),