add profiles in leiningen plugin

plugin.clj

(ns lein-test-env.plugin)

(def profiles
  {:aws {:pallet/test-env {}
         :dependencies '[[com.palletops/pallet-aws "0.2.0"]
                         [ch.qos.logback/logback-classic "1.1.1"]
                         [org.slf4j/jcl-over-slf4j "1.7.6"]]}})

(defn middleware
  "Middleware to add test-env profiles"
  [project]
  (-> project
      (update-in [:profiles] merge profiles)
      (vary-meta update-in [:without-profiles :profiles] merge profiles)))