update chrome, chromedriver and use systemd script for xvfb

playbooks/roles/browsers/defaults/main.yml

@@ -12,11 +12,11 @@ browser_deb_pkgs:
 # Both Chrome and FireFox update their apt repos with the latest version,
 # which often causes spurious acceptance test failures.
 browser_s3_deb_pkgs:
-    - { name: "google-chrome-stable_30.0.1599.114-1_amd64.deb", url: "https://s3.amazonaws.com/vagrant.testeng.edx.org/google-chrome-stable_30.0.1599.114-1_amd64.deb" }
     - { name: "firefox-mozilla-build_42.0-0ubuntu1_amd64.deb", url: "https://s3.amazonaws.com/vagrant.testeng.edx.org/firefox-mozilla-build_42.0-0ubuntu1_amd64.deb" }
+    - { name: "google-chrome-stable_55.0.2883.87-1_amd64.deb", url: "https://s3.amazonaws.com/vagrant.testeng.edx.org/google-chrome-stable_55.0.2883.87-1_amd64.deb" }
 
-# Chrome and ChromeDriver
-chromedriver_version: 2.6
+# ChromeDriver
+chromedriver_version: 2.27
 chromedriver_url: "http://chromedriver.storage.googleapis.com/{{ chromedriver_version }}/chromedriver_linux64.zip"
 
 # PhantomJS

playbooks/roles/browsers/tasks/main.yml

@@ -71,9 +71,42 @@
 - assert:
     that: "phantomjs.stat.exists"
 
-- name: create xvfb upstart script
-  template: src=xvfb.conf.j2 dest=/etc/init/xvfb.conf owner=root group=root
+- name: create xvfb upstart script for Precise and Trusty (12.04 and 14.04)
+  template:
+    src: xvfb.conf.j2
+    dest: /etc/init/xvfb.conf
+    owner: root
+    group: root
+  when: ansible_distribution_release == 'precise' or ansible_distribution_release == 'trusty'
+  tags:
+    - install
+    - install:configuration
 
-- name: start xvfb
+- name: start xvfb upstart script for Precise and Trusty (12.04 and 14.04)
   shell: start xvfb
   ignore_errors: yes
+  when: ansible_distribution_release == 'precise' or ansible_distribution_release == 'trusty'
+  tags:
+    - install
+    - install:configuration
+
+- name: create xvfb systemd service for Xenial (16.04)
+  template:
+    src: xvfb.service.j2
+    dest: /etc/systemd/system/xvfb.service
+    owner: root
+    group: root
+  when: ansible_distribution_release == 'xenial'
+  tags:
+    - install
+    - install:configuration
+
+- name: enable and start xvfb systemd service for Xenial (16.04)
+  systemd:
+    name: xvfb
+    enabled: yes
+    state: started
+  when: ansible_distribution_release == 'xenial'
+  tags:
+    - install
+    - install:configuration

playbooks/roles/browsers/templates/xvfb.service.j2

+[Unit]
+Description=Xvfb X Server
+After=network.target
+
+[Service] 
+ExecStart=/usr/bin/Xvfb {{ browser_xvfb_display }} -screen 0 1024x768x24
+
+[Install]
+WantedBy=multi-user.target