Rename ModuleToIndex to PalletRuntimeSetup (#7148)

* Rename `ModuleToIndex` to `PalletRuntimeSetup`

Besides the renaming it also adds support getting the name of a pallet
as configured in the runtime.

* Rename it to `PalletInfo`

* Remove accidentally added files

substrate/frame/system/src/lib.rs

@@ -117,7 +117,7 @@ use frame_support::{
 	decl_module, decl_event, decl_storage, decl_error, Parameter, ensure, debug,
 	storage,
 	traits::{
-		Contains, Get, ModuleToIndex, OnNewAccount, OnKilledAccount, IsDeadAccount, Happened,
+		Contains, Get, PalletInfo, OnNewAccount, OnKilledAccount, IsDeadAccount, Happened,
 		StoredMap, EnsureOrigin, OriginTrait, Filter,
 	},
 	weights::{
@@ -256,11 +256,13 @@ pub trait Trait: 'static + Eq + Clone {
 	/// Get the chain's current version.
 	type Version: Get<RuntimeVersion>;
 
-	/// Convert a module to its index in the runtime.
+	/// Provides information about the pallet setup in the runtime.
 	///
-	/// Expects the `ModuleToIndex` type that is being generated by `construct_runtime!` in the
-	/// runtime. For tests it is okay to use `()` as type (returns `0` for each input).
-	type ModuleToIndex: ModuleToIndex;
+	/// Expects the `PalletInfo` type that is being generated by `construct_runtime!` in the
+	/// runtime.
+	///
+	/// For tests it is okay to use `()` as type, however it will provide "useless" data.
+	type PalletInfo: PalletInfo;
 
 	/// Data to be associated with an account (other than nonce/transaction counter, which this
 	/// module does regardless).

substrate/frame/system/src/mock.rs

@@ -101,7 +101,7 @@ impl Trait for Test {
 	type AvailableBlockRatio = AvailableBlockRatio;
 	type MaximumBlockLength = MaximumBlockLength;
 	type Version = Version;
-	type ModuleToIndex = ();
+	type PalletInfo = ();
 	type AccountData = u32;
 	type OnNewAccount = ();
 	type OnKilledAccount = RecordKilled;