Benchmark Democracy Pallet (#5257)

* Add origin bounds to benchmark macro.

* Add democracy benchmark.

* Fix tests

* Remove collective from frame/benchmarking, partially use EnsureOrigin.

* Remove collective stuff.

* Make previous benches compile again.

* Remove comments.

* Make prev bench to work again.

* Add remove votes.

* Add new proxy calls.

* Add runtime-benchmarks guard to EnsureOrigin and implementations.

* Refactor.

* Add missing import.

* Remove duplicated import

* Fix features.

* Add some missing features.

* Update frame/collective/Cargo.toml

Co-Authored-By: Kian Paimani <5588131+kianenigma@users.noreply.github.com>

* Update frame/democracy/src/benchmarking.rs

Co-Authored-By: Kian Paimani <5588131+kianenigma@users.noreply.github.com>

* Update frame/democracy/src/benchmarking.rs

Co-Authored-By: Kian Paimani <5588131+kianenigma@users.noreply.github.com>

* Add referendums to state.

* populate vecs before call

* Update weight docs

* More fixes and weight docs

* More updates

Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>
Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

substrate/frame/society/Cargo.toml

@@ -34,3 +34,7 @@ std = [
 	"frame-support/std",
 	"frame-system/std",
 ]
+runtime-benchmarks = [
+	"sp-runtime/runtime-benchmarks",
+	"frame-system/runtime-benchmarks",
+]

substrate/frame/society/src/lib.rs

@@ -1145,6 +1145,12 @@ impl<T: Trait> EnsureOrigin<T::Origin> for EnsureFounder<T> {
 			(r, _) => Err(T::Origin::from(r)),
 		})
 	}
+
+	#[cfg(feature = "runtime-benchmarks")]
+	fn successful_origin() -> T::Origin {
+		let founder = Founder::<T>::get().expect("society founder should exist");
+		T::Origin::from(system::RawOrigin::Signed(founder))
+	}
 }
 
 /// Pick an item at pseudo-random from the slice, given the `rng`. `None` iff the slice is empty.