ci: Use cicd-actions setup-bazel-cache and unblock user namespace for linux-sandbox actions (eclipse-score#151)

There is now a release of cicd-actions! Lets make use of that and
simplify our code.

cicd-workflows are also being updated:
eclipse-score/cicd-workflows#125

# setup-bazel-cache
This centralizes bazel caching logic within S-CORE and moves it into a
central place of perfection.

# unblock linux user namespaces for linux-sandbox
The code in cicd-actions is better tested and should be considered a
single source of perfection

Author: lurtz

.github/actions/unblock_user_namespace_for_linux_sandbox/action.yml

@@ -35,22 +35,11 @@ jobs:
       - name: Create config indicator file
         run: echo "${{ matrix.bazel-config }}" > .bazel_config
       - name: Setup Bazel
-        uses: bazel-contrib/setup-bazel@0.19.0
+        uses: eclipse-score/cicd-actions/setup-bazel-cache@659dcbed63f6b7fbde88c7850125ea0a0a92f939
         with:
-          output-base: /mnt/.bazel
-          # Avoid downloading Bazel every time.
-          bazelisk-cache: true
-          # Store build cache per workflow.
-          disk-cache: ${{ github.workflow }}-${{ matrix.bazel-config }}
-          # Share repository cache between workflows.
-          repository-cache: |
-            - ./MODULE.bazel
-            - ./.bazel_config
-          # Cache external/
-          external-cache: true
-          cache-save: ${{ github.event_name == 'push' }}
+          unique-cache-name: ${{ github.workflow }}-${{ github.job }}-${{ matrix.bazel-config }}
       - name: Allow linux-sandbox
-        uses: ./.github/actions/unblock_user_namespace_for_linux_sandbox
+        uses: eclipse-score/cicd-actions/unblock-user-namespace-for-linux-sandbox@659dcbed63f6b7fbde88c7850125ea0a0a92f939
       - run: df -h
       - name: Bazel build targets
         # TODO: build all targets ( //... ) once python toolchain issue is resolved.

.github/workflows/build_and_test_cross_compilation.yml

@@ -31,22 +31,11 @@ jobs:
       - name: Create config indicator file
         run: echo "host" > .bazel_config
       - name: Setup Bazel
-        uses: bazel-contrib/setup-bazel@0.19.0
+        uses: eclipse-score/cicd-actions/setup-bazel-cache@659dcbed63f6b7fbde88c7850125ea0a0a92f939
         with:
-          output-base: /mnt/.bazel
-          # Avoid downloading Bazel every time.
-          bazelisk-cache: true
-          # Store build cache per workflow.
-          disk-cache: ${{ github.workflow }}
-          # Share repository cache between workflows.
-          repository-cache: |
-            - ./MODULE.bazel
-            - ./.bazel_config
-          # Cache external/
-          external-cache: true
-          cache-save: ${{ github.event_name == 'push' }}
+          unique-cache-name: ${{ github.workflow }}-${{ github.job }}
       - name: Allow linux-sandbox
-        uses: ./.github/actions/unblock_user_namespace_for_linux_sandbox
+        uses: eclipse-score/cicd-actions/unblock-user-namespace-for-linux-sandbox@659dcbed63f6b7fbde88c7850125ea0a0a92f939
       - run: df -h
       - name: Bazel build targets
         run: |

.github/workflows/build_and_test_host.yml

@@ -42,15 +42,8 @@ jobs:
           sudo mkdir -p /mnt/.bazel
           sudo chown -R $USER:$USER /mnt/.bazel
       - name: Setup Bazel
-        uses: bazel-contrib/setup-bazel@0.19.0
+        uses: eclipse-score/cicd-actions/setup-bazel-cache@659dcbed63f6b7fbde88c7850125ea0a0a92f939
         with:
-          output-base: /mnt/.bazel
-          # Avoid downloading Bazel every time.
-          bazelisk-cache: true
-          # Share repository cache between workflows.
-          repository-cache: true
-          # Cache external/
-          external-cache: true
-          cache-save: false
+          unique-cache-name: ${{ github.workflow }}-${{ github.job }}
       - name: Allow linux-sandbox
-        uses: ./.github/actions/unblock_user_namespace_for_linux_sandbox
+        uses: eclipse-score/cicd-actions/unblock-user-namespace-for-linux-sandbox@659dcbed63f6b7fbde88c7850125ea0a0a92f939