Remove unittest file from docker image

ci/jenkins/step/package.groovy

@@ -4,6 +4,7 @@ timeout(time: 5, unit: 'MINUTES') {
         sh "./yaml_processor.py merge -f /opt/milvus/conf/server_config.yaml -m ../yaml/update_server_config.yaml -i && rm /opt/milvus/conf/server_config.yaml.bak"
         sh "sed -i 's/\\/tmp\\/milvus/\\/opt\\/milvus/g' /opt/milvus/conf/log_config.conf"
     }
+    sh "rm -rf /opt/milvus/unittest"
     sh "tar -zcvf ./${PROJECT_NAME}-${PACKAGE_VERSION}.tar.gz -C /opt/ milvus"
     withCredentials([usernamePassword(credentialsId: "${params.JFROG_CREDENTIALS_ID}", usernameVariable: 'JFROG_USERNAME', passwordVariable: 'JFROG_PASSWORD')]) {
         def uploadStatus = sh(returnStatus: true, script: "curl -u${JFROG_USERNAME}:${JFROG_PASSWORD} -T ./${PROJECT_NAME}-${PACKAGE_VERSION}.tar.gz ${params.JFROG_ARTFACTORY_URL}/milvus/package/${PROJECT_NAME}-${PACKAGE_VERSION}.tar.gz")