Reverse linux/windows stage sequence(as linux is faster); Add g++ to linux image

.gitlab-ci.yml

@@ -20,13 +20,14 @@
 #
 
 stages:
-- windows
 - linux
+- windows
 
 masterJobLinux:
   stage: linux
   image: maven:3-jdk-8
   script:
+  - apt-get update -q && apt-get install -y -q g++
   - gcc --help
   - mvn -Dmaven.wagon.http.ssl.insecure=true -Dmaven.wagon.http.ssl.allowall=true -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn -B  clean deploy --settings settings.xml
   - cat target/site/jacoco/index.html