Add kokoro enterpirse repo to manifest.

Change-Id: Ib7aee8636b1785ce25bad85b7b801b8d157eb15d
diff --git a/enterprise.xml b/enterprise.xml
index 65e598c..7304f6f 100644
--- a/enterprise.xml
+++ b/enterprise.xml
@@ -80,5 +80,8 @@
       groups="notdefault,internal" remote="coral-internal" />
     <project name="imx-vpuwrap-debian" path="packages/imx-vpuwrap"
       groups="notdefault,internal" remote="coral-internal" />
+
+    <project name="kokoro-enterprise" path="kokoro"
+      groups="notdefault,internal" remote="coral-internal" />
     <!-- END closed source repositories -->
 </manifest>