buildscripts: Add xDS GKE interop tests buildscript placeholder
diff --git a/buildscripts/kokoro/xds-k8s.cfg b/buildscripts/kokoro/xds-k8s.cfg
new file mode 100644
index 0000000..be553d3
--- /dev/null
+++ b/buildscripts/kokoro/xds-k8s.cfg
@@ -0,0 +1,11 @@
+# Config file for internal CI
+
+# Location of the continuous shell script in repository.
+build_file: "grpc-java/buildscripts/kokoro/xds-k8s.sh"
+timeout_mins: 90
+action {
+  define_artifacts {
+    regex: "artifacts/*sponge_log.xml"
+    regex: "artifacts/*sponge_log.log"
+  }
+}
diff --git a/buildscripts/kokoro/xds-k8s.sh b/buildscripts/kokoro/xds-k8s.sh
new file mode 100755
index 0000000..70f88ff
--- /dev/null
+++ b/buildscripts/kokoro/xds-k8s.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+
+# A placeholder for xDS interop tests executed on GKE
+echo "Coming soon"