Adds sourceURL column, required for UBI

Signed-off-by: Tyler Smalley <tyler.smalley@elastic.co>

tasks/licenses_csv_report.js

@@ -52,7 +52,7 @@ function formatCsvValues(fields, values) {
 
 export default function licensesCSVReport(grunt) {
   grunt.registerTask('licenses:csv_report', 'Report of 3rd party dependencies', async function () {
-    const fields = ['name', 'version', 'url', 'license'];
+    const fields = ['name', 'version', 'url', 'license', 'sourceURL'];
     const done = this.async();
 
     try {
@@ -81,6 +81,7 @@ export default function licensesCSVReport(grunt) {
           licenses: [
             'Custom;https://www.redhat.com/licenses/EULA_Red_Hat_Universal_Base_Image_English_20190422.pdf',
           ],
+          sourceURL: 'https://oss-dependencies.elastic.co/redhat/ubi/ubi-minimal-8-source.tar.gz',
         }
       );
 
@@ -91,6 +92,7 @@ export default function licensesCSVReport(grunt) {
             version: pkg.version,
             url: pkg.repository || `https://www.npmjs.com/package/${pkg.name}`,
             license: pkg.licenses.join(','),
+            sourceURL: pkg.sourceURL,
           };
 
           return formatCsvValues(fields, data);