Minor fixes for build/deploy commands
- #399 Accomodate spaces in --build-arg value @rgee0
- #394 #404 Make registry auth optional for store deploy @viveksyngh @alexellis
- 6532f3c Fixes issue with double warning about insecure TLS @alexellis
- b7c6f0b Issue #410 shows registryAuth sent for local Docker images which is not required @alexellis