automatically run, pass, and report on tests nightly

Tests of the master branch pass when run locally and individually, where permissions and timeouts are less of an issue. But in tests by Travis, timeouts stop some tests and permission issues block identity management.

This issue is to track updating test configuration till all tests are run nightly and pass consistently. The test reports should be available publicly but other than that requirement they could be run in VSTS instead of Travis if desired.

Related: #201.

Start by reviewing the existing Travis test configuration and the context in related issue #201. The work is done when all master-branch tests run nightly, pass consistently despite timeout and permission issues, and their reports are publicly available.

Written by the indexing model from the issue text.