fpm: fix circular dependency with config stuff

lib/fetch-package-metadata.js

@@ -8,7 +8,7 @@ const rimraf = require('rimraf')
 const validate = require('aproba')
 const npa = require('npm-package-arg')
 const npm = require('./npm')
-const npmConfig = require('./config/figgy-config.js')
+let npmConfig
 const npmlog = require('npmlog')
 const limit = require('call-limit')
 const tempFilename = require('./utils/temp-filename')
@@ -52,6 +52,9 @@ function fetchPackageMetadata (spec, where, opts, done) {
     err.code = 'EWINDOWSPATH'
     return logAndFinish(err)
   }
+  if (!npmConfig) {
+    npmConfig = require('./config/figgy-config.js')
+  }
   pacote.manifest(dep, npmConfig({
     annotate: true,
     fullMetadata: opts.fullMetadata,
@@ -95,6 +98,9 @@ function addBundled (pkg, next) {
   }
   pkg._bundled = null
   const target = tempFilename('unpack')
+  if (!npmConfig) {
+    npmConfig = require('./config/figgy-config.js')
+  }
   const opts = npmConfig({integrity: pkg._integrity})
   pacote.extract(pkg._resolved || pkg._requested || npa.resolve(pkg.name, pkg.version), target, opts).then(() => {
     log.silly('addBundled', 'read tarball')