Merged companions and update Subtrate (#882)

* expunge legacy code from polkadot-network

* mostly rip out old legacy protocol from service

* ensure validation work is spawned by incoming messages

* decouple availabliity store from network logic; clean up data flow

* av_store: test helpers and use futures-abort

* update polkadot-validation to pass n_validators when submitting chunks

* fallible erasure-chunk fetching

* implement `ErasureNetworking` for new network prot

* API for registering availability store in network

* fully integrate new network service into service

* fix validation tests

* scaffolding for porting collator over to new network

* track connected validators' peer IDs and distribute collators' collations

* helper in network for fetching all checked statements

* fix adder-collator

* actually register notifications protocol

* Update service/src/lib.rs

* Make needed changes to service

* Merge two companion PRs.

- #880
- #881

* Some effort towards compilation

* Fix

* remove `NetworkSpecialization` references from network

* fix compilation errors in service and collator

* ensure protocol name is valid

* Fixes

* Fix

Co-authored-by: Robert Habermeier <rphmeier@gmail.com>
Co-authored-by: Ashley <ashley.ruglys@gmail.com>

polkadot/runtime/common/src/claims.rs

@@ -330,6 +330,7 @@ mod tests {
 	parameter_types! {
 		pub const ExistentialDeposit: u64 = 1;
 		pub const CreationFee: u64 = 0;
+		pub const MinVestedTransfer: u64 = 0;
 	}
 
 	impl balances::Trait for Test {
@@ -344,6 +345,7 @@ mod tests {
 		type Event = ();
 		type Currency = Balances;
 		type BlockNumberToBalance = Identity;
+		type MinVestedTransfer = MinVestedTransfer;
 	}
 
 	parameter_types!{