All test modules were moved under `integration` tag and are now in
`internal/integration` folder: no more `cmd/integration-test`
executable.
New Kres version is able to build the same executable from the tests
directory instead.
All Omni related flags were renamed, for example `--endpoint` ->
`--omni.endpoint`.
2 more functional changes:
- Enabled `--test.failfast` for all test runs.
- Removed finalizers, which were running if the test has failed.
Both of these changes should make it easier to understand the test
failure: Talos node logs won't be cluttered with the finalizer tearing
down the cluster.
Fixes: https://github.com/siderolabs/omni/issues/1171
Signed-off-by: Artem Chernyshev <artem.chernyshev@talos-systems.com>
