fix(ubuntu): add support for ubuntu distros for v4 (#155)

Author: alenakhineika

package.json

@@ -32,7 +32,7 @@
     "get-mongodb-version": "^2.0.0",
     "lodash.defaults": "^4.2.0",
     "lodash.difference": "^4.1.1",
-    "mongodb-download-url": "^0.4.2",
+    "mongodb-download-url": "^0.4.3",
     "mongodb-version-list": "^1.0.0",
     "semver": "^5.3.0",
     "tildify": "^1.2.0",