OCP4: Add workflow to test ocp content

Add this workflow so we can test ocp4 content can be parsed on each PR

.github/workflows/k8s-content-pr-test.yaml

@@ -0,0 +1,58 @@
+---
+name: Gate / Kubernetes Test Content Parsing
+
+on:
+  pull_request:
+    types:
+    - opened
+    - reopened
+    - synchronize
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.number || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  datastream-parsing:
+    name: XCCDF Datastream parsing
+    runs-on: ubuntu-latest
+    steps:
+      - name: Copy XCCDF files from existing content image
+        uses: nick-fields/retry@v3
+        with:
+          timeout_minutes: 15
+          max_attempts: 3
+          retry_wait_seconds: 120
+          retry_on: error
+          command: |
+            mkdir -p content
+            docker pull ghcr.io/complianceascode/k8scontent:${{ github.event.number }}
+            docker run --rm -v $PWD/content:/content:z ghcr.io/complianceascode/k8scontent:${{ github.event.number }} bash -c "cp *.xml /content"
+      - name: Clone compliance operator repository
+        run: |
+          git clone https://github.com/ComplianceAsCode/compliance-operator.git
+      - uses: actions/setup-go@v5
+        with:
+          go-version: '>=1.19.0'
+      - run: go version
+      - name: Install ginkgo
+        run: |
+          go install github.com/onsi/ginkgo/ginkgo@latest
+      - name: Run ginkgo tests and check if each XCCDF file is parsed correctly
+        run: |
+          export CONTENT_FOLDER=$PWD/content
+          cd compliance-operator
+          for file in $CONTENT_FOLDER/*.xml; do
+            export DEFAULT_CONTENT_DS_FILE_PATH=$file
+            ginkgo --focus "Testing for correct content parsing" ./pkg/utils | tee /tmp/ginkgo_output
+            if grep -q "0 Passed" /tmp/ginkgo_output && grep -q "0 Failed" /tmp/ginkgo_output; then
+              echo "XCCDF file $file is not parsed correctly"
+              exit 1
+            elif grep -q "SUCCESS!" /tmp/ginkgo_output; then
+              echo "XCCDF file $file is parsed correctly"
+            else
+              echo "XCCDF file $file is not parsed correctly"
+              exit 1
+            fi
+          done
+