add Extrinsic Ordering check that runs against a local reference node

.github/workflows/release-21_extrinsic-ordering-check-from-two.yml

@@ -0,0 +1,96 @@
+# This workflow performs the Extrinsic Ordering Check on demand using a binary
+
+name: Release - Extrinsic Ordering Check against alternative binary
+on:
+  workflow_dispatch:
+    inputs:
+      reference_binary_url:
+        description: A url to a Linux binary for the node containing the reference runtime to test against
+        default: https://releases.parity.io/polkadot/x86_64-debian:stretch/v0.9.26/polkadot
+        required: true
+      binary_url:
+        description: A url to a Linux binary for the node containing the runtime to test
+        default: https://releases.parity.io/polkadot/x86_64-debian:stretch/v0.9.27-rc1/polkadot
+        required: true
+      chain:
+        description: The name of the chain under test. Usually, you would pass a local chain
+        default: kusama-local
+        required: true
+
+jobs:
+  check:
+    name: Run check
+    runs-on: ubuntu-latest
+    env:
+      CHAIN: ${{github.event.inputs.chain}}
+      BIN_URL: ${{github.event.inputs.binary_url}}
+      REF_URL: ${{github.event.inputs.reference_binary_url}}
+
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v3
+
+      - name: Fetch reference binary
+        run: |
+          echo Fetching $REF_URL
+          wget $REF_URL
+          mv polkadot polkadot-ref
+          chmod a+x polkadot-ref
+          ./polkadot-ref --version
+
+      - name: Fetch binary
+        run: |
+          echo Fetching $BIN_URL
+          wget $BIN_URL
+          chmod a+x polkadot
+          ./polkadot --version
+
+      - name: Start local reference node
+        run: |
+          echo Running reference on $CHAIN
+          ./polkadot-ref --chain=$CHAIN --rpc-port=9934 --ws-port=9945 --base-path=polkadot-ref-base/ &
+
+      - name: Start local test node
+        run: |
+          echo Running test on $CHAIN
+          ./polkadot --chain=$CHAIN &
+
+      - name: Prepare output
+        run: |
+          VERSION=$(./polkadot --version)
+          echo "Metadata comparison:" >> output.txt
+          echo "Date: $(date)" >> output.txt
+          echo "Reference: $REF_URL" >> output.txt
+          echo "Target version: $VERSION" >> output.txt
+          echo "Chain: $CHAIN" >> output.txt
+          echo "----------------------------------------------------------------------" >> output.txt
+
+      - name: Pull polkadot-js-tools image
+        run: docker pull jacogr/polkadot-js-tools
+
+      - name: Compare the metadata
+        run: |
+          CMD="docker run --pull always --network host jacogr/polkadot-js-tools metadata ws://localhost:9945 ws://localhost:9944"
+          echo -e "Running:\n$CMD"
+          $CMD >> output.txt
+          sed -z -i 's/\n\n/\n/g' output.txt
+          cat output.txt | egrep -n -i ''
+          SUMMARY=$(./scripts/ci/github/extrinsic-ordering-filter.sh output.txt)
+          echo -e $SUMMARY
+          echo -e $SUMMARY >> output.txt
+
+      - name: Show result
+        run: |
+          cat output.txt
+
+      - name: Stop our local nodes
+        run: |
+          pkill polkadot-ref
+          pkill polkadot
+
+      - name: Save output as artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: ${{ env.CHAIN }}
+          path: |
+            output.txt