* Companion for Substrate#7795

https://github.com/paritytech/substrate/pull/7795

* Fix missing test

* "Update Substrate"

Co-authored-by: parity-processbot <>

Because of a bug in the test script, we didn't stopped CI when the main
tests are failed.

* introduce a waiting period before selecting candidates and bitfields

* add network_bridge=debug tracing for rep

* change to 2.5s timeout in proposer

* pass timeout to proposer

* move timeout back to provisioner

* grumbles

* Update node/core/provisioner/src/lib.rs

* Fix nitpicks

* Fix bug

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
Co-authored-by: Bastian Köcher <git@kchr.de>

* Adds integration test based on adder collator

This adds an integration test for parachains that uses the adder
collator. The test will start two relay chain nodes and one collator and
waits until 4 blocks are build and enacted by the parachain.

* Make sure the integration test is run in CI

* Fix wasm compilation

* Update parachain/test-parachains/adder/collator/src/lib.rs

Co-authored-by: Sergei Shulepov <sergei@parity.io>

* Update cli/src/command.rs

Co-authored-by: Sergei Shulepov <sergei@parity.io>

* Improve and unify testing facilities

This improves the testing facilities by making the test client easier to
use. It also removes code that is not required for the test client.
Besides that it also moves the test service and test client under
`node/test`.

* Update Cargo.lock

* Update node/test/client/src/block_builder.rs

Co-authored-by: Andronik Ordian <write@reusable.software>

* Remove explicit lifetime annotation

* Fix warnings and add extra `BlockBuilderExt`

Co-authored-by: Andronik Ordian <write@reusable.software>

Fixes #833