Added secrets required for DLP tests.

Author: kurtisvg

.kokoro/tests/run_tests.sh

@@ -45,7 +45,7 @@ export GOOGLE_APPLICATION_CREDENTIALS=${KOKORO_GFILE_DIR}/service-acct.json
 export GOOGLE_CLOUD_PROJECT=java-docs-samples-testing
 export PATH=/google-cloud-sdk/bin:$PATH
 source ${KOKORO_GFILE_DIR}/aws-secrets.sh
-
+source ${KOKORO_GFILE_DIR}/dlp_secrets.txt
 echo "******** Environment *********"
 env
 echo "******** mvn & Java *********"