Add Go mod cache to integration tests and optimize GRADLE_OPTS

- Added Go module cache (~/go/pkg/mod) to all integration test jobs (github, azure, gitlab, bitbucket-server)
- Moved GRADLE_OPTS env var from job-level to step-level, only set for packagehandlers tests
- This avoids downloading Go dependencies repeatedly in integration tests
- GRADLE_OPTS only affects packagehandlers tests which actually use Gradle

Author: eyalk007

.github/workflows/test.yml

@@ -60,7 +60,6 @@ jobs:
     runs-on: ${{ matrix.os }}-latest
     env:
       JFROG_CLI_LOG_LEVEL: "DEBUG"
-      GRADLE_OPTS: -Dorg.gradle.daemon=false
     strategy:
       fail-fast: false
       matrix:
@@ -115,7 +114,6 @@ jobs:
             ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}-
             ${{ runner.os }}-go-
 
-      # Package managers are only needed for Package Handlers tests (fix functionality)
       - name: Install npm
         if: matrix.suite.package == 'packagehandlers'
         uses: actions/setup-node@v3
@@ -189,6 +187,7 @@ jobs:
         env:
           JF_URL: ${{ secrets.PLATFORM_URL }}
           JF_ACCESS_TOKEN: ${{ secrets.PLATFORM_ADMIN_TOKEN }}
+          GRADLE_OPTS: ${{ matrix.suite.package == 'packagehandlers' && '-Dorg.gradle.daemon=false' || '' }}
 
   github-integration:
     name: GitHub Integration Tests
@@ -212,6 +211,15 @@ jobs:
         with:
           go-version: 1.23.x
           cache: false
+
+      - name: Go Cache Dependencies
+        uses: actions/cache@v4
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+
       - name: Go Cache Build & Tests
         uses: actions/cache@v4
         with:
@@ -257,6 +265,15 @@ jobs:
         with:
           go-version: 1.23.x
           cache: false
+
+      - name: Go Cache Dependencies
+        uses: actions/cache@v4
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+
       - name: Go Cache Build & Tests
         uses: actions/cache@v4
         with:
@@ -302,6 +319,15 @@ jobs:
         with:
           go-version: 1.23.x
           cache: false
+
+      - name: Go Cache Dependencies
+        uses: actions/cache@v4
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+
       - name: Go Cache Build & Tests
         uses: actions/cache@v4
         with:
@@ -351,6 +377,14 @@ jobs:
           chmod +x $bb_script_path
           sh $bb_script_path
 
+      - name: Go Cache Dependencies
+        uses: actions/cache@v4
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+
       - name: Go Cache Build & Tests
         uses: actions/cache@v4
         with: