fix(ci): Add a cache prestep

.github/workflows/cache.yml

@@ -15,14 +15,6 @@ jobs:
         with:
           ref: ${{ github.event.pull_request.head.sha }}
 
-      - name: Cache pip
-        uses: actions/cache@9b0c1fce7a93df8e3bb8926b0d6e9d89e92f20a7 # 3.0.11
-        with:
-          path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ hashFiles('./requirements.txt') }}
-          restore-keys: |
-            ${{ runner.os }}-pip-
-
       - name: Cache Vagrant boxes
         uses: actions/cache@9b0c1fce7a93df8e3bb8926b0d6e9d89e92f20a7 # 3.0.11
         with:
@@ -31,25 +23,3 @@ jobs:
           key: vagrant-boxes-${{ hashFiles('**/molecule.yml') }}
           restore-keys: |
             vagrant-boxes
-
-      - name: Download Vagrant boxes for all scenarios
-        # To save some cache space, all scenarios share the same cache key.
-        # On the other hand, this means that the cache contents should be
-        # the same across all scenarios. This step ensures that.
-        run: ./.github/download-boxes.sh
-
-      - name: Set up Python ${{ env.PYTHON_VERSION }}
-        uses: actions/setup-python@75f3110429a8c05be0e1bf360334e4cced2b63fa # 2.3.3
-        with:
-          python-version: ${{ env.PYTHON_VERSION }}
-          cache: 'pip' # caching pip dependencies
-
-      - name: Install dependencies
-        run: |
-          echo "::group::Upgrade pip"
-          python3 -m pip install --upgrade pip
-          echo "::endgroup::"
-
-          echo "::group::Install Python requirements from requirements.txt"
-          python3 -m pip install -r requirements.txt
-          echo "::endgroup::"

.github/workflows/test.yml

@@ -30,13 +30,13 @@ jobs:
           * fdad:bad:ba55::/64
           EOF
 
-      - name: Cache pip
-        uses: actions/cache@9b0c1fce7a93df8e3bb8926b0d6e9d89e92f20a7 # 3.0.11
+      - name: Restore pip
+        uses: actions/cache/restore@9b0c1fce7a93df8e3bb8926b0d6e9d89e92f20a7 # 3.0.11
+        id: cache
         with:
           path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ hashFiles('./requirements.txt') }}
-          restore-keys: |
-            ${{ runner.os }}-pip-
+          key: ${{ runner.os }}-pip-
+          fail-on-cache-miss: true
 
       - name: Download Vagrant boxes for all scenarios
         # To save some cache space, all scenarios share the same cache key.