Split tests into scenarios and units

Refactor tests to split them into scenario and unit tests. Unit tests
should only test a single unit of work any dependency should be mocked
or stubbed. Scenario or integration tests on the other-hand should
verify that different units play well to gather. This refactoring pave
the way for further test improvements.

/Closes mesosphere/marahon#2928

package.json

@@ -84,13 +84,15 @@
     "clean": "rm -rf dist release",
     "dist": "export GULP_ENV=\"production\" && npm run clean && npm run test && npm run build",
     "shrinkwrap": "gulp version-check && npm-shrinkwrap --dev",
-    "test": "mocha --ui exports --reporter src/test/reporter/reporterSwitch --require babel-core/register --require babel-polyfill --require src/test/environment/jsdom  src/test/**/*.test.* src/test/*.test.*",
+    "test": "mocha --ui exports --reporter src/test/reporter/reporterSwitch --require babel-core/register --require babel-polyfill --require src/test/environment/jsdom  src/test/units/**/*.test.* src/test/scenarios/**/*.test.*",
+    "test:units": "mocha --ui exports --reporter src/test/reporter/reporterSwitch --require babel-core/register --require babel-polyfill --require src/test/environment/jsdom  src/test/units/**/*.test.*",
+    "test:scenarios": "mocha --ui exports --reporter src/test/reporter/reporterSwitch --require babel-core/register --require babel-polyfill --require src/test/environment/jsdom  src/test/scenarios/**/*.test.*",
     "lint": "eslint src/**/*.js*",
     "serve": "export GULP_ENV=\"development\" DISABLE_SOURCE_MAP=false && gulp serve",
     "serve-notify": "export NOTIFY=true && npm run serve",
     "livereload": "export GULP_ENV=\"development\" DISABLE_SOURCE_MAP=false && gulp livereload",
     "cover:prepare": "rm -Rf coverage",
-    "cover:run": "babel-node ./node_modules/istanbul/lib/cli cover node_modules/mocha/bin/_mocha -- --require src/test/environment/jsdom src/test/*.test.* src/test/**/*.test.*",
+    "cover:run": "babel-node ./node_modules/istanbul/lib/cli cover node_modules/mocha/bin/_mocha -- --require src/test/environment/jsdom src/test/units/**/*.test.* src/test/scenarios/**/*.test.*",
     "cover:report": "npm run cover; istanbul-coveralls",
     "cover": "npm run cover:prepare; npm run cover:run"
   }