playbook: Upgrade kernel and tweak server.

playbook/roles/vifib-kernel/tasks/main.yml

+---
+  - name: Install kernel 4.6 on debian 8.0
+    apt: name=linux-image-4.6.0-0.bpo.1-amd64  state=latest default_release=jessie-backports update_cache=yes
+    when: ansible_distribution == "Debian" and ansible_distribution_major_version == "8"        
+
+

playbook/vifib-upgrade.yml

@@ -22,4 +22,5 @@
     - { role: package, package_name: exim4-base, package_state: absent }
     - { role: package, package_name: slapos-node, package_state: latest }
     - vifib-team-ssh-key
-
+    - vifib-server
+    - vifib-kernel