feat(client): Teach option flag for tracing requests

[Cryptophobia]

From @deis-admin on January 19, 2017 21:13

From @bacongobbler on January 12, 2015 16:59

An option flag to trace requests would help users understand how communication between the client and the server occur, as well as help understand where a connection issue may occur, such as in a proxied environment or if DNS routes are set up incorrectly.

Common client option flags would be --debug, --verbose or --trace. I'm personally in favour of --verbose as typically you can tune the verbosity up or down based on your needs.

Copied from original issue: deis/deis#2884

Copied from original issue: deis/workflow-cli#290

[Cryptophobia]

From @deis-admin on January 19, 2017 21:13

From @Joshua-Anderson on July 27, 2015 22:20

@bacongobbler What would this output look like?
Things that could be shown with --verbose:

• request URL
• request body
• response body/headers