fix: include mock-require

Author: danwdart

package-lock.json

@@ -25,13 +25,14 @@
     "istanbul": "^1.1.0-alpha.1",
     "istanbul-cobertura-badger": "^1.2.1",
     "mocha": "^3.2.0",
+    "mock-require": "^3.0.1",
     "redis": "^2.6.4",
+    "semantic-release": "8.2.0",
     "should": "^11.1.2",
     "sinon": "^2.0.0",
     "snazzy": "^5.0.0",
     "standard": "^8.6.0",
-    "supertest": "^2.0.1",
-    "semantic-release": "8.2.0"
+    "supertest": "^2.0.1"
   },
   "repository": {
     "type": "git",