Merge pull request #278 from GNS3/update-travisci-xenial

Update TravisCI to Xenial, Fixes: #277

.travis.yml

@@ -11,34 +11,27 @@ cache:
   directories:
     - node_modules
 
+dist: xenial
+
 addons:
 apt:
   sources:
     - google-chrome
     - ubuntu-toolchain-r-test
   packages:
-    - google-chrome-stable
-    - google-chrome-beta
+    - google_chrome
     - g++-4.8
 
+services:
+  - xvfb
+
 before_install:
-  - export CHROME_BIN=chromium-browser
-  - export DISPLAY=:99.0
-  - sh -e /etc/init.d/xvfb start
   # greenkeeper-lockfile support
   - yarn global add greenkeeper-lockfile@1
-
-# Ubuntu trusty supports max python3.4, cx_freeze-5.1.1 requires min 3.5
-# Remove when goes to xenial
   - |
-    curl -L https://raw.githubusercontent.com/yyuu/pyenv-installer/master/bin/pyenv-installer | bash
-    export PATH="~/.pyenv/bin:$PATH"
-    eval "$(pyenv init -)"
-    eval "$(pyenv virtualenv-init -)"
-    pyenv virtualenv 3.6.3 general
-    pyenv global general
     python3 -V
-    pip3 -V
+    wget -qO- https://bootstrap.pypa.io/get-pip.py | sudo python3
+    python3 -m pip -V
 
 
 before_script:
@@ -70,9 +63,8 @@ after_script:
 
 # publish
   - yarn buildforelectron
-  - python3 -m venv env
   - |
-    pip3 install -r scripts/requirements.txt
+    python3 -m pip install -r scripts/requirements.txt
     python3 scripts/build.py download
     python3 scripts/build.py build_exe -b dist/exe.gns3server -s
     python3 scripts/build.py validate -b dist