CI: arango.endpoints system property

Author: rashtao

src/test/java/com/arangodb/tinkerpop/gremlin/AbstractTest.java

@@ -51,7 +51,7 @@ public void clear() {
     protected ArangoDBConfigurationBuilder confBuilder() {
         return new ArangoDBConfigurationBuilder()
                 .enableDataDefinition(true)
-                .hosts("172.28.0.1:8529")
+                .hosts(System.getProperty("arango.endpoints", "172.28.0.1:8529"))
                 .user("root")
                 .password("test")
                 .protocol(Protocol.HTTP2_VPACK)

src/test/java/com/arangodb/tinkerpop/gremlin/TestGraphProvider.java

@@ -45,7 +45,7 @@ protected void configureDataDefinitions(ArangoDBConfigurationBuilder builder,
     public ArangoDBConfigurationBuilder confBuilder() {
         ArangoDBConfigurationBuilder builder = new ArangoDBConfigurationBuilder()
                 .enableDataDefinition(true)
-                .hosts("172.28.0.1:8529")
+                .hosts(System.getProperty("arango.endpoints", "172.28.0.1:8529"))
                 .user("root")
                 .password("test")
                 .protocol(Protocol.HTTP2_VPACK)