move bunyan out of devDependencies

(needed by @google-cloud/logging-bunyan)

services/document-updater/package-lock.json

@@ -1072,7 +1072,6 @@
       "version": "0.22.3",
       "resolved": "https://registry.npmjs.org/bunyan/-/bunyan-0.22.3.tgz",
       "integrity": "sha512-v9dd5qmd6nJHEi7fiNo1fR2pMpE8AiB47Ap984p4iJKj+dEA69jSccmq6grFQn6pxIh0evvKpC5XO1SKfiaRoQ==",
-      "dev": true,
       "requires": {
         "dtrace-provider": "0.2.8",
         "mv": "~2"
@@ -1082,7 +1081,6 @@
           "version": "0.2.8",
           "resolved": "https://registry.npmjs.org/dtrace-provider/-/dtrace-provider-0.2.8.tgz",
           "integrity": "sha512-wufYnYt4ISHnT9MEiRgQ3trXuolt7mICTa/ckT+KYHR667K9H82lmI8KM7zKUJ8l5I343A34wJnvL++1TJn1iA==",
-          "dev": true,
           "optional": true
         }
       }

services/document-updater/package.json

@@ -21,6 +21,7 @@
   },
   "dependencies": {
     "async": "^2.5.0",
+    "bunyan": "~0.22.1",
     "coffee-script": "~1.7.0",
     "express": "3.11.0",
     "lodash": "^4.17.13",
@@ -33,7 +34,6 @@
     "settings-sharelatex": "^1.1.0"
   },
   "devDependencies": {
-    "bunyan": "~0.22.1",
     "chai": "^3.5.0",
     "chai-spies": "^0.7.1",
     "cluster-key-slot": "^1.0.5",