Small refactor to prepare for --show-outputs in TargetsCommand
Small refactor to prepare for --show-outputs in TargetsCommand

Summary: Pull the target specs up and keep it around as a local var so we can reuse it later to grab the output label out of the specs

Reviewed By: philipjameson

shipit-source-id: 87a9658814fd5449ebfb984dc71b4cbf404053b2

kageiit/buck,facebook/buck,JoelMarcey/buck,Addepar/buck,nguyentruongtho/buck,Addepar/buck,nguyentruongtho/buck,Addepar/buck,Addepar/buck,nguyentruongtho/buck,nguyentruongtho/buck,JoelMarcey/buck,Addepar/buck,Addepar/buck,kageiit/buck,Addepar/buck,Addepar/buck,facebook/buck,facebook/buck,JoelMarcey/buck,JoelMarcey/buck,kageiit/buck,JoelMarcey/buck,JoelMarcey/buck,nguyentruongtho/buck,kageiit/buck,JoelMarcey/buck,JoelMarcey/buck,JoelMarcey/buck,JoelMarcey/buck,Addepar/buck,kageiit/buck,nguyentruongtho/buck,kageiit/buck,nguyentruongtho/buck,facebook/buck,Addepar/buck,Addepar/buck,JoelMarcey/buck,facebook/buck,facebook/buck,JoelMarcey/buck,JoelMarcey/buck,facebook/buck,kageiit/buck,Addepar/buck,Addepar/buck