use GH Actions to compile and tests with Scala 3 (#30427)

* use GH Actions to compile and tests with Scala 3

* Update .github/workflows/scala3-build.yml

Co-authored-by: Andrea Peruffo <andrea.peruffo1982@gmail.com>

* rename .jvmopts-travis to .jvmopts-ci

* Restore the whitesource stage

* Small updates to gh action workflow

* Mark BoundedBlockingQueueSpec timing-sensitive and exclude

* Avoid race condition stopping/starting test actors

Co-authored-by: Andrea Peruffo <andrea.peruffo1982@gmail.com>
Co-authored-by: Ignasi Marimon-Clos <ignasi@lightbend.com>
Co-authored-by: Arnout Engelen <arnout@bzzt.net>

.github/workflows/scala3-build.yml

@@ -0,0 +1,47 @@
+name: Build Akka with Scala 3
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+    tags-ignore: [ v.* ]
+
+jobs:
+  compile-and-test-with-scala3:
+    name: Compile and test with Scala 3
+    runs-on: ubuntu-18.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Set up JDK 11
+        uses: olafurpg/setup-scala@v10
+        with:
+          java-version: adopt@1.11.0-9
+
+      - name: Cache Coursier cache
+        uses: coursier/cache-action@v6.2
+
+      - name: Compile and test selected modules on Scala 3
+        run: |
+          sbt -jvm-opts .jvmopts-ci \
+            -Dakka.build.scalaVersion=3.0 \
+            -Dakka.test.tags.exclude=performance,timing,long-running \
+            akka-actor-tests/test \
+            akka-actor-testkit-typed/test \
+            akka-actor-typed/compile \
+            akka-actor-typed-tests/test \
+            akka-discovery/test \
+            akka-pki/test \
+            akka-protobuf/test \
+            akka-protobuf-v3/test \
+            akka-slf4j/test \akka-stream/test \
+            akka-stream-tests-tck/test \
+            akka-coordination/test \
+            akka-serialization-jackson/test:compile \
+            akka-testkit/test \
+            akka-stream-testkit/test \
+            akka-remote/compile