fix: fetch_keystore

Author: jinseopkim0

ci/kokoro/macos/common.cfg

@@ -15,5 +15,15 @@
 build_file: "google-cloud-cpp/ci/kokoro/macos/build.sh"
 timeout_mins: 240
 
+before_action {
+  fetch_keystore {
+    keystore_resource {
+      keystore_config_id: 73713
+      keyname: "cloud-cpp-kokoro-run-sa-key"
+      backend: "blade:keystore-fastconfigpush"
+    }
+  }
+}
+
 gfile_resources: "/bigstore/cloud-cpp-integration-secrets/build-results-service-account.json"
 gfile_resources: "/bigstore/cloud-cpp-integration-secrets/kokoro-run-key.json"

ci/kokoro/windows/common.cfg

@@ -16,6 +16,16 @@
 build_file: "google-cloud-cpp/ci/kokoro/windows/build.bat"
 timeout_mins: 240
 
+before_action {
+  fetch_keystore {
+    keystore_resource {
+      keystore_config_id: 73713
+      keyname: "cloud-cpp-kokoro-run-sa-key"
+      backend: "blade:keystore-fastconfigpush"
+    }
+  }
+}
+
 gfile_resources: "/bigstore/cloud-cpp-integration-secrets/build-results-service-account.json"
 gfile_resources: "/bigstore/cloud-cpp-integration-secrets/kokoro-run-key.json"