ci: turn on proto-tests for the CI builds

Add an extra run configuration for the proto-tests.

Proto-tests require DEVELOPER=1; enabling EXPERIMENTAL_FEATURES=1
by default ensures that experimental additions are automatically put
under test also.

.github/workflows/ci.yaml

@@ -59,6 +59,61 @@ jobs:
           path: report.*
           if-no-files-found: ignore
 
+  proto-test:
+    name: Protocol Test Config
+    runs-on: ubuntu-20.04
+    needs: [smoke-test]
+    env:
+      DEVELOPER: 1
+      EXPERIMENTAL_FEATURES: 1
+      COMPAT: 0
+      PYTEST_PAR: 2
+      TEST_CMD: "make check-protos"
+      TEST_GROUP: 1
+      TEST_GROUP_COUNT: 1
+    strategy:
+      fail-fast: true
+      matrix:
+        compiler: [gcc]
+        db: [postgres, sqlite3]
+        valgrind: [0, 1]
+        network: [regtest] # FIXME: add liquid-regtest
+        include:
+          - {compiler: clang, db: sqlite3, valgrind: 1}
+          - {compiler: clang, db: postgres, valgrind: 1}
+          - {arch: arm32v7, TARGET_HOST: arm-linux-gnueabihf, valgrind: 1, network: regtest}
+          - {arch: arm64v8, TARGET_HOST: aarch64-linux-gnu, valgrind: 1, network: regtest}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2.0.0
+
+      - name: Setup Python 3.6
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.6
+
+      - name: Install dependencies
+        run: |
+          bash -x .github/scripts/setup.sh
+
+      - name: Build
+        env:
+          ARCH: ${{ matrix.arch }}
+          COMPILER: ${{ matrix.compiler }}
+          DB: ${{ matrix.db }}
+          NETWORK: ${{ matrix.network }}
+          TARGET_HOST: ${{ matrix.TARGET_HOST }}
+          VALGRIND: ${{ matrix.valgrind }}
+        run: |
+          bash -x .github/scripts/build.sh
+
+      - name: Upload Unit Test Results
+        if: always()
+        uses: actions/upload-artifact@v2
+        with:
+          name: Junit Report ${{ github.run_number }}.{{ matrix.cfg }}
+          path: report.*
+
   normal-test:
     name: Normal Test Config ${{ matrix.cfg }}
     runs-on: ubuntu-20.04