add some required attributes to metadata.json

metadata.json

@@ -2,6 +2,9 @@
     "name": "secure-afs-request",
     "version": "1.0.0",
     "author": "adamhl",
+    "license": " GPL-2.0-or-later",
+    "summary": "Install and configure secure afs request web application",
+    "source": "https://code.stanford.edu/puppetpublic/secure_afs_request.git",
     "dependencies": [
         { "name":"puppetlabs/stdlib" } ]
 }