[ci] Add experimental feature in tests and cargo check (#1173)

* [ci] Add experimental feature in tests and cargo check

* fix labels GHA

* disable D-labels

* add check license

* add auto-label-issues

* fix CHECK_SPECS for labels

* rm useless commands

* Update .github/workflows/check-labels.yml

* fix

* Fudge license scanner

* remove spellcheck job

---------

Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

.gitlab/pipeline/test.yml

@@ -34,7 +34,7 @@ test-linux-stable:
         --release \
         --verbose \
         --no-fail-fast \
-        --features runtime-benchmarks,try-runtime \
+        --features runtime-benchmarks,try-runtime,experimental \
         --partition count:${CI_NODE_INDEX}/${CI_NODE_TOTAL}
     # run runtime-api tests with `enable-staging-api` feature on the 1st node
     - if [ ${CI_NODE_INDEX} == 1 ]; then time cargo nextest run -p sp-api-test --features enable-staging-api; fi