Upgrade to substrate 2.0.0 (#173)

* Upgrade to substrate 2.0.0

* WIP implement Subcommand manually (see https://github.com/paritytech/substrate/pull/6894#issuecomment-676060197)

* Add pallet-staking/std to the std feature

* Sort out the subcommand impl

* Sort out the module index (ty @ascjones)
Sort out the RefCount type (ty @dvc94ch)
Random tweaks to make test-node more similar to the vanilla node-template

* obey the fmt

* cleanup

* more cleanup

test-node/src/command.rs

@@ -16,7 +16,10 @@
 
 use crate::{
     chain_spec,
-    cli::Cli,
+    cli::{
+        Cli,
+        Subcommand,
+    },
     service,
 };
 use sc_cli::{
@@ -25,7 +28,6 @@ use sc_cli::{
     RuntimeVersion,
     SubstrateCli,
 };
-use sc_service::PartialComponents;
 
 impl SubstrateCli for Cli {
     fn impl_name() -> String {
@@ -74,18 +76,13 @@ pub fn run() -> sc_cli::Result<()> {
     let cli = Cli::from_args();
 
     match &cli.subcommand {
-        Some(subcommand) => {
-            let runner = cli.create_runner(subcommand)?;
-            runner.run_subcommand(subcommand, |config| {
-                let PartialComponents {
-                    client,
-                    backend,
-                    task_manager,
-                    import_queue,
-                    ..
-                } = service::new_partial(&config)?;
-                Ok((client, backend, import_queue, task_manager))
-            })
+        Some(Subcommand::BuildSpec(cmd)) => {
+            let runner = cli.create_runner(cmd)?;
+            runner.sync_run(|config| cmd.run(config.chain_spec, config.network))
+        }
+        Some(Subcommand::PurgeChain(cmd)) => {
+            let runner = cli.create_runner(cmd)?;
+            runner.sync_run(|config| cmd.run(config.database))
         }
         None => {
             let runner = cli.create_runner(&cli.run)?;