Add travis.

Author: VolkerHartmann

.travis.yml

@@ -0,0 +1,30 @@
+language: java
+
+dist: xenial
+
+jdk:
+# Enable all versions which should be supported
+- openjdk8
+- openjdk11
+# - openjdk13
+
+
+before_install:
+- docker pull elasticsearch:7.9.3
+- docker run -d --name elasticsearch4metastore  -p 9200:9200 -p 9300:9300 -e "discovery.type=single-node" elasticsearch:7.9.3
+
+install: true
+  
+script:
+- "./gradlew -Ptravis clean check jacocoTestReport"
+
+after_success:
+- "./gradlew coveralls"
+
+before_cache:
+  - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
+  - rm -fr $HOME/.gradle/caches/*/plugin-resolution/
+
+cache:
+  directories:
+    - $HOME/.gradle/caches/