Improve test gha

Author: ValentaTomas

.github/workflows/pr_tests.yml

@@ -15,13 +15,10 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Set up Rust
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@1.85.0
 
       - name: Run unit tests
-        run: cargo test --workspace
-
-      - name: Run doc tests
-        run: cargo test --workspace --doc
+        run: cargo test --workspace --lib --bins
 
   build:
     name: Build
@@ -31,7 +28,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Set up Rust
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@1.85.0
         with:
           components: clippy
 
@@ -44,45 +41,14 @@ jobs:
   functional-tests:
     name: Functional Tests
     runs-on: ubuntu-latest
-    needs: build
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Set up Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: "3.11"
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
 
-      - name: Install Python dependencies
+      - name: Run functional tests with devtool
         run: |
-          pip install pytest pytest-timeout pytest-json-report requests psutil tenacity filelock "urllib3<2.0" requests-unixsocket aws-embedded-metrics
-
-      - name: Set up Rust
-        uses: dtolnay/rust-toolchain@stable
-
-      - name: Build Firecracker release
-        run: cargo build --release
-
-      - name: Check KVM availability
-        id: check_kvm
-        run: |
-          if [ -c /dev/kvm ] && [ -r /dev/kvm ] && [ -w /dev/kvm ]; then
-            echo "kvm_available=true" >> $GITHUB_OUTPUT
-          else
-            echo "kvm_available=false" >> $GITHUB_OUTPUT
-            echo "⚠️ KVM not available - functional tests will skip"
-          fi
-
-      - name: Run functional tests
-        if: steps.check_kvm.outputs.kvm_available == 'true'
-        run: |
-          cd tests
-          sudo env PATH="$PATH" PYTHONPATH=. pytest -m 'not nonci and not no_block_pr' integration_tests/functional/
+          ./tools/devtool -y test -- integration_tests/functional/
         continue-on-error: true
-
-      - name: Collect functional tests (dry run)
-        if: steps.check_kvm.outputs.kvm_available == 'false'
-        run: |
-          cd tests
-          pytest --collect-only -m 'not nonci and not no_block_pr' integration_tests/functional/