Add sonarqube analysis job in gitlab-ci file.

.gitlab-ci.yml

 stages:
+  - sonar-analysis
   - build
   - deploy
 
 variables:
   PROXY_HOST_TARGET: https://download.data.grandlyon.com
+  SONAR_URL: https://sonarqube.forge.grandlyon.com
+
+sonarqube:
+  stage: sonar-analysis
+  only:
+    - development
+  before_script:
+    - export PATH=$PATH:/usr/local/bin/sonar-scanner-3.2.0.1227-linux/bin/
+    - export NODE_PATH=$NODE_PATH:`npm root -g`
+  script:
+    - >
+      sonar-scanner
+      -Dsonar.projectName=${SONAR_PROJECT_KEY}
+      -Dsonar.projectVersion=1.0
+      -Dsonar.sourceEncoding=UTF-8
+      -Dsonar.projectBaseDir=.
+      -Dsonar.host.url=${SONAR_URL}
+      -Dsonar.projectKey=${SONAR_PROJECT_KEY}
+      -Dsonar.login=${SONAR_TOKEN}
 
 build_development:
   stage: build