Revert Revert "Change update-service-broker usage to reflect recent CLI change."

This reverts commit 74f7537ce7e67c9eee8014c73ac2ea9e83e8d70b.
Add unadulterated CF push diego test

[delivers #77350144]
use a standalone bash webserver for diego tests

this resolves slowness and flakiness around push that we've been seeing
due to giant buildpacks.

we're adding a single test that covers this instead, and switching the
rest to run as fast as possible.

[finishes #77030680]

Signed-off-by: Glyn Normington <gnormington@pivotal.io>
Update README with correct information about capturing output

CF_TRACE_BASENAME no longer works, use artifacts_directory in
integration_config.json

[#77206926]
Merge pull request #37 from deadcats/75217152-docker-cats

Exercise Docker support in CATs
unfocus
Add CAT for docker env vars

[#75752312]

Signed-off-by: Stewart Nickolas <nickolas@us.ibm.com>