Revamp nomination pool reward scheme (#11669)

* make pool roles optional

* undo lock file changes?

* add migration

* add the ability for pools to chill themselves

* boilerplate of tests

* somewhat stable, but I think I found another bug as well

* Fix it all

* Add more more sophisticated test + capture one more bug.

* Update frame/staking/src/lib.rs

* reduce the diff a little bit

* add some test for the slashing bug

* cleanup

* fix lock file?

* Fix

* fmt

* Update frame/nomination-pools/src/lib.rs

Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Update frame/nomination-pools/src/lib.rs

Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Update frame/nomination-pools/src/lib.rs

Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Update frame/nomination-pools/src/mock.rs

Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Fix build

* fix some fishy tests..

* add one last integrity check for MinCreateBond

* remove bad assertion -- needs to be dealt with later

* nits

* fix tests and add benchmarks for chill

* remove stuff

* fix benchmarks

* cargo run --quiet --profile=production  --features=runtime-benchmarks --manifest-path=bin/node/cli/Cargo.toml -- benchmark pallet --chain=dev --steps=50 --repeat=20 --pallet=pallet_nomination_pools --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --output=./frame/nomination-pools/src/weights.rs --template=./.maintain/frame-weight-template.hbs

* remove defensive

* first working version

* bring back all tests

* ALL new tests work now

* cleanup

* make sure benchmarks and all work

* cargo run --quiet --profile=production  --features=runtime-benchmarks --manifest-path=bin/node/cli/Cargo.toml -- benchmark pallet --chain=dev --steps=50 --repeat=20 --pallet=pallet_nomination_pools --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --output=./frame/nomination-pools/src/weights.rs --template=./.maintain/frame-weight-template.hbs

* round of self-review, make arithmetic safe

* fix warn

* add migration code

* Fix doc

* add precision notes

* make arithmetic fallible

* fix node runtime

* a lot of precision tests and notes and stuff

* document MaxPOintsToBalance better

* :round of self-review

* fmt

* fix some comments

* Fix proportional slashing logic

* Update frame/nomination-pools/src/tests.rs

Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Update frame/nomination-pools/src/tests.rs

Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Update frame/nomination-pools/src/lib.rs

Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* track poinst in migration

* fix

* fmt

* fix migration

* remove event read

* Apply suggestions from code review

* Update frame/staking/src/lib.rs

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

* Update frame/nomination-pools/src/lib.rs

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

* Update frame/nomination-pools/src/lib.rs

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

* update

* fmt

* fmt

* add one last test

* fmt

Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>
Co-authored-by: Parity Bot <admin@parity.io>

substrate/utils/frame/try-runtime/cli/src/lib.rs

@@ -472,9 +472,10 @@ pub enum State {
 		#[clap(short, long)]
 		snapshot_path: Option<PathBuf>,
 
-		/// The pallets to scrape. If empty, entire chain state will be scraped.
+		/// A pallet to scrape. Can be provided multiple times. If empty, entire chain state will
+		/// be scraped.
 		#[clap(short, long, multiple_values = true)]
-		pallets: Vec<String>,
+		pallet: Vec<String>,
 
 		/// Fetch the child-keys as well.
 		///
@@ -498,7 +499,7 @@ impl State {
 				Builder::<Block>::new().mode(Mode::Offline(OfflineConfig {
 					state_snapshot: SnapshotConfig::new(snapshot_path),
 				})),
-			State::Live { snapshot_path, pallets, uri, at, child_tree } => {
+			State::Live { snapshot_path, pallet, uri, at, child_tree } => {
 				let at = match at {
 					Some(at_str) => Some(hash_of::<Block>(at_str)?),
 					None => None,
@@ -507,7 +508,7 @@ impl State {
 					.mode(Mode::Online(OnlineConfig {
 						transport: uri.to_owned().into(),
 						state_snapshot: snapshot_path.as_ref().map(SnapshotConfig::new),
-						pallets: pallets.clone(),
+						pallets: pallet.clone(),
 						scrape_children: true,
 						at,
 					}))