4.1.0

List of PRs / issues for this release

Bugfixes

• Correct INDEX_URL logic in build.py _set_auth_headers
• Fix for empty auth keys in config.json

Features

• Add NetworkAttachmentConfig for service create/update

Miscellaneous

• Bump pytest to 4.3.1
• Adjust --platform tests for changes in docker engine
• Update credentials-helpers to v0.6.3