Enable TestAuthDescribeFailure integration test

[anton-107]

Changes

1. remove t.Skip directive from TestAuthDescribeFailure integration test
2. remove checking the host in the test

Why

1. This enables integration test that exercises databricks auth describe command, which was previously throwing errors in the CI/CD pipeline. For the nonexistent profile check to fail, we need to create a new profile file for the CLI to check (otherwise the configuration skips checking of the provided profile actually exists).
2. I removed the assertion for the host part because it is not relevant for the test, and setting that up just required more code in the test setup.

Tests

The integration test is passing

[andrewnester]

LGTM! Note: we can convert this test to acceptance test instead as a followup