build: use github tarball to download jackrabbit dependency

Author: Tom Kirkpatrick

package.json

@@ -31,7 +31,7 @@
     "amqplib": "0.4.2",
     "bluebird": "3.4.1",
     "debug": "2.2.0",
-    "jackrabbit": "git://github.com/beeman/jackrabbit.git#da8edbe0eeab4d448ec2b97f0ca48cc1028ff4f3",
+    "jackrabbit": "https://github.com/beeman/jackrabbit/tarball/da8edbe0eeab4d448ec2b97f0ca48cc1028ff4f3",
     "lodash": "4.16.4",
     "ssl-root-cas": "1.2.1"
   },