Added lodash back to verify if this fails the tests

Author: fayyazarshad

packages/optimizely-sdk/package.json

@@ -38,6 +38,7 @@
     "@optimizely/js-sdk-logging": "^0.1.0",
     "@optimizely/js-sdk-utils": "^0.2.0",
     "json-schema": "^0.2.3",
+    "lodash": "^4.17.11",
     "murmurhash": "0.0.2",
     "promise-polyfill": "8.1.0",
     "uuid": "^3.3.2"