azdev setup doesn't report error

if one of the setup step fails, it should report error instead of showing successful.
or at least remove `-q` of `pip install` when in --debug mode.

I have accidently maped my local file with docker then use docker root update azure-cli-testsdk package, then pip install -e /src/azure-cli-testsdk reports about some file permission error, but the azdev setup still shows successfully finished.