Jenkinsfile에 cloud 파라미터 추가

- podTemplate에 cloud: 'k8s' 설정 추가
- Jenkins Kubernetes 클라우드 설정과 연결

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

deployment/cicd/Jenkinsfile

@@ -7,6 +7,7 @@ def getImageTag() {
 }
 
 podTemplate(
+    cloud: 'k8s',
     label: "${PIPELINE_ID}",
     serviceAccount: 'jenkins',
     slaveConnectTimeout: 300,