GEODE-10435: Migrate to GH Actions (#116)

* remove .travis.yml
* added GH workflow
* using 1.15.0 as a version for Geode on develop
diff --git a/.github/workflows/gradle.yml b/.github/workflows/gradle.yml
new file mode 100644
index 0000000..ad5ad3f
--- /dev/null
+++ b/.github/workflows/gradle.yml
@@ -0,0 +1,47 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+name: develop
+
+on:
+  push:
+    branches: [ "develop" ]
+  pull_request:
+    branches: [ "develop" ]
+
+permissions:
+  contents: read
+
+jobs:
+  runAll:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest]
+        distribution: ['liberica']
+    runs-on: ${{ matrix.os }}
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up JDK
+      uses: actions/setup-java@v3
+      with:
+        distribution: ${{ matrix.distribution }}
+        java-version: '8'
+    - name: Run All
+      uses: gradle/gradle-build-action@v2
+      with:
+        arguments: runAll --console=plain --no-daemon
\ No newline at end of file
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index dc3ceaa..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,43 +0,0 @@
-# Licensed to the Apache Software Foundation (ASF) under one or more
-# contributor license agreements. See the NOTICE file distributed with
-# this work for additional information regarding copyright ownership.
-# The ASF licenses this file to You under the Apache License, Version 2.0
-# (the "License"); you may not use this file except in compliance with
-# the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-language: java
-
-jdk:
-  - openjdk8
-
-script: ./gradlew runAll
-
-before_cache:
-  - rm -f $HOME/.gradle/caches/modules-2/modules-2.lock
-
-cache:
-  directories:
-    - $HOME/.gradle/caches/
-    - $HOME/.gradle/wrapper/
-
-after_failure:
-  - cat /home/travis/build/apache/geode-examples/build/reports/rat/rat-report.txt
-
-notifications:
-  email:
-    recipients:
-      - dev@geode.apache.org
-    on_success: change
-    on_failure: change
-
-branches:
-  except:
-    - /^feature.*$/
diff --git a/gradle.properties b/gradle.properties
index de0f807..cd2994f 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -14,8 +14,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-version = 1.16.0-build.0
-geodeVersion = 1.16.+
+
+# Develop to use latest 1.15.1 artifacts until CI is rebuilt
+# GEODE-10436
+version = 1.15.1-build.0
+geodeVersion = 1.15.+
 
 # release properties, set these on the command line to validate against
 # a release candidate