Optimize cache behavior on CI

.github/workflows/dashboards-observability-test-and-build-workflow.yml

@@ -44,6 +44,7 @@ jobs:
           YARN_VERSION=$(node -p "require('./OpenSearch-Dashboards/package.json').engines.yarn")
           echo "Installing yarn@$YARN_VERSION"
           npm i -g yarn@$YARN_VERSION
+          yarn config set network-timeout 1000000 -g
 
       - run: node -v
       - run: yarn -v
@@ -53,20 +54,26 @@ jobs:
         with:
           path: OpenSearch-Dashboards/plugins/dashboards-observability
 
-      - name: Load Plugin Bootstrap cache
+      - name: Configure Yarn Cache
+        shell: bash
+        run: echo "YARN_CACHE_LOCATION=$(yarn cache dir)" >> $GITHUB_ENV
+
+      - name: Initialize Yarn Cache
         uses: actions/cache@v3
         with:
           path: |
-            **/node_modules
-            **/target
-          key: ${{ runner.os }}-bootstrap-${{ hashFiles('OpenSearch-Dashboards/yarn.lock', 'OpenSearch-Dashboards/plugins/dashboards-observability/yarn.lock') }}
-          restore-keys: ${{ runner.os }}-bootstrap-
+            ${{ env.YARN_CACHE_LOCATION }}
+          key: ${{ runner.os }}-yarn-${{ hashFiles('OpenSearch-Dashboards/yarn.lock', 'OpenSearch-Dashboards/plugins/dashboards-observability/yarn.lock') }}
+          restore-keys: ${{ runner.os }}-yarn-
 
       - name: Plugin Bootstrap
-        run: |
-          cd OpenSearch-Dashboards
-          yarn config set network-timeout 1000000 -g
-          yarn osd bootstrap || yarn osd bootstrap
+        uses: nick-fields/retry@v2
+        with:
+          timeout_minutes: 15
+          max_attempts: 2
+          command: |
+            cd OpenSearch-Dashboards
+            yarn osd bootstrap
 
       - name: Test all dashboards-observability modules
         run: |