Rococo/Westend Coretime Runtime

New runtimes for the Coretime Chain (a.k.a. "Broker Chain") described in
RFC-1.

Replaces https://github.com/paritytech/cumulus/pull/2889


- [x] Add Agile Coretime pallet
https://github.com/paritytech/substrate/pull/14568
- [x] Generate chain specs for local and testnets
- [x] Deploy parachain on Rococo - Done:
[rococo-coretime-rpc.polkadot.io](https://polkadot.js.org/apps/?rpc=wss%3A%2F%2Frococo-coretime-rpc.polkadot.io#/explorer)

DevOps issue for Aura keygen:
https://github.com/paritytech/devops/issues/2725

Edit (Dónal): This PR is mainly for Rococo, the Westend runtime is a
shell with no `Broker` pallet. The Rococo runtime has the broker calls
filtered for initial deployment.

---------

Co-authored-by: Dónal Murray <donal.murray@parity.io>
Co-authored-by: 0xmovses <r.v.melkonian@gmail.com>
Co-authored-by: Liam Aharon <liam.aharon@hotmail.com>
Co-authored-by: Bastian Köcher <git@kchr.de>
Co-authored-by: Marcin S. <marcin@realemail.net>
Co-authored-by: Bastian Köcher <info@kchr.de>
Co-authored-by: command-bot <>
Co-authored-by: Branislav Kontur <bkontur@gmail.com>

cumulus/scripts/create_coretime_rococo_spec.sh

@@ -0,0 +1,86 @@
+#!/usr/bin/env bash
+
+usage() {
+    echo Usage:
+    echo "$1 <srtool compressed runtime path>"
+    echo "$2 <para_id>"
+    echo "e.g.: ./cumulus/scripts/create_coretime_rococo_spec.sh ./target/release/wbuild/coretime-rococo-runtime/coretime_rococo_runtime.compact.compressed.wasm 1005"
+    exit 1
+}
+
+if [ -z "$1" ]; then
+    usage
+fi
+
+if [ -z "$2" ]; then
+    usage
+fi
+
+set -e
+
+rt_path=$1
+para_id=$2
+
+echo "Generating chain spec for runtime: $rt_path and para_id: $para_id"
+
+binary="./target/release/polkadot-parachain"
+
+# build the chain spec we'll manipulate
+$binary build-spec --chain coretime-rococo-dev > chain-spec-plain.json
+
+# convert runtime to hex
+cat $rt_path | od -A n -v -t x1 |  tr -d ' \n' > rt-hex.txt
+
+# replace the runtime in the spec with the given runtime and set some values to production
+# Related issue for bootNodes, invulnerables, and session keys: https://github.com/paritytech/devops/issues/2725
+cat chain-spec-plain.json | jq --rawfile code rt-hex.txt '.genesis.runtimeGenesis.code = ("0x" + $code)' \
+    | jq '.name = "Rococo Coretime"' \
+    | jq '.id = "coretime-rococo"' \
+    | jq '.chainType = "Live"' \
+    | jq '.bootNodes = [
+          "/dns/rococo-coretime-collator-node-0.polkadot.io/tcp/30333/p2p/12D3KooWHBUH9wGBx1Yq1ZePov9VL3AzxRPv5DTR4KadiCU6VKxy",
+          "/dns/rococo-coretime-collator-node-1.polkadot.io/tcp/30333/p2p/12D3KooWB3SKxdj6kpwTkdMnHJi6YmadojCzmEqFkeFJjxN812XX"
+        ]' \
+    | jq '.relay_chain = "rococo"' \
+    | jq --argjson para_id $para_id '.para_id = $para_id' \
+    | jq --argjson para_id $para_id '.genesis.runtimeGenesis.patch.parachainInfo.parachainId = $para_id' \
+    | jq '.genesis.runtimeGenesis.patch.balances.balances = []' \
+    | jq '.genesis.runtimeGenesis.patch.collatorSelection.invulnerables = [
+          "5G6Zua7Sowmt6ziddwUyueQs7HXDUVvDLaqqJDXXFyKvQ6Y6",
+          "5C8aSedh7ShpWEPW8aTNEErbKkMbiibdwP8cRzVRNqLmzAWF"
+        ]' \
+    | jq '.genesis.runtimeGenesis.patch.session.keys = [
+          [
+            "5G6Zua7Sowmt6ziddwUyueQs7HXDUVvDLaqqJDXXFyKvQ6Y6",
+            "5G6Zua7Sowmt6ziddwUyueQs7HXDUVvDLaqqJDXXFyKvQ6Y6",
+            {
+              "aura": "5G6Zua7Sowmt6ziddwUyueQs7HXDUVvDLaqqJDXXFyKvQ6Y6"
+            }
+          ],
+          [
+            "5C8aSedh7ShpWEPW8aTNEErbKkMbiibdwP8cRzVRNqLmzAWF",
+            "5C8aSedh7ShpWEPW8aTNEErbKkMbiibdwP8cRzVRNqLmzAWF",
+            {
+              "aura": "5C8aSedh7ShpWEPW8aTNEErbKkMbiibdwP8cRzVRNqLmzAWF"
+            }
+          ]
+        ]' \
+    > edited-chain-spec-plain.json
+
+# build a raw spec
+$binary build-spec --chain edited-chain-spec-plain.json --raw > chain-spec-raw.json
+cp edited-chain-spec-plain.json coretime-rococo-spec.json
+cp chain-spec-raw.json ./cumulus/parachains/chain-specs/coretime-rococo.json
+cp chain-spec-raw.json coretime-rococo-spec-raw.json
+
+# build genesis data
+$binary export-genesis-state --chain chain-spec-raw.json > coretime-rococo-genesis-head-data
+
+# build genesis wasm
+$binary export-genesis-wasm --chain chain-spec-raw.json > coretime-rococo-wasm
+
+# cleanup
+rm -f rt-hex.txt
+rm -f chain-spec-plain.json
+rm -f chain-spec-raw.json
+rm -f edited-chain-spec-plain.json