Add github action PR build (#2078)

* Add a set of github action workflows to migrate off travis.   Just three for testing right now.

* More GHA fixes.

* Fix build.

* one more fix.

* Remove Java11 as it won't work iwthout massive changes/dropping Java7 support, likely.

Author: jsuereth

.github/workflows/build-checker.yml

@@ -0,0 +1,25 @@
+name: Build Checker
+
+on: 
+  pull_request:
+      branches:
+      - master
+
+jobs:
+  build:
+    name: Build Checker
+    runs-on: ubuntu-18.04
+    steps:
+      - uses: actions/[email protected]
+        with:
+          fetch-depth: 0
+      - id: setup-java
+        name: Setup Java 8
+        uses: actions/setup-java@v2
+        with:
+          distribution: adopt
+          java-version: 8
+      - uses: burrunan/[email protected]
+        with:
+          remote-build-cache-proxy-enabled: false
+          arguments: clean assemble -PcheckerFramework=true

.github/workflows/build-gradle-examples.yml

@@ -0,0 +1,30 @@
+name: Build Gradle Examples
+
+on: 
+  pull_request:
+      branches:
+      - master
+
+jobs:
+  build:
+    name: Build Gradle Examples Ubuntu
+    runs-on: ubuntu-18.04
+    steps:
+      - uses: actions/[email protected]
+        with:
+          fetch-depth: 0
+      - id: setup-java
+        name: Setup Java 8
+        uses: actions/setup-java@v2
+        with:
+          distribution: adopt
+          java-version: 8
+      - uses: burrunan/[email protected]
+        with:
+          remote-build-cache-proxy-enabled: false
+      - name: Build Examples
+        working-directory: ./examples
+        run: ./gradlew clean assemble --stacktrace && ./gradlew check && ./gradlew verGJF 
+      - name: Build Spring Servlet example
+        working-directory: ./examples/spring/servlet
+        run: ./gradlew clean assemble --stacktrace && ./gradlew check && ./gradlew verGJF 

.github/workflows/build-maven-examples.yml

@@ -0,0 +1,27 @@
+name: Build Maven Examples
+
+on: 
+  pull_request:
+      branches:
+      - master
+
+jobs:
+  build:
+    name: Build Maven Examples Ubuntu
+    runs-on: ubuntu-18.04
+    steps:
+      - uses: actions/[email protected]
+        with:
+          fetch-depth: 0
+      - id: setup-java
+        name: Setup Java 8
+        uses: actions/setup-java@v2
+        with:
+          distribution: adopt
+          java-version: 8
+      - name: Build Examples
+        working-directory: ./examples
+        run: mvn --batch-mode --update-snapshots clean package appassembler:assemble -e
+      - name: Build Spring Servlet example
+        working-directory: ./examples/spring/servlet
+        run: mvn --batch-mode --update-snapshots clean package appassembler:assemble -e

.github/workflows/build.yml

@@ -0,0 +1,36 @@
+name: Build
+
+on: 
+  pull_request:
+      branches:
+      - master
+
+jobs:
+  build:
+    name: Build
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os:
+          - macos-latest
+          - ubuntu-18.04
+        java:
+          - 8
+          # TODO: Java 11 build doesn't work due to Java7 target.
+        include:
+          - os: ubuntu-18.04
+            java: 8
+            coverage: true
+    steps:
+      - uses: actions/[email protected]
+        with:
+          fetch-depth: 0
+      - id: setup-java
+        name: Setup Java ${{ matrix.java }}
+        uses: actions/setup-java@v2
+        with:
+          distribution: adopt
+          java-version: ${{ matrix.java }}
+      - run: ./gradlew clean assemble check --stacktrace
+      # TODO: Run jacocoTestReport
+      # TODO: Run verGJF