docker.install: add some fixes to the role
docker.install: add some fixes to the role

At some point it seems that the fake initctl breaks the boot sequence
so it's better remove it as soon as Docker is properly installed
Also add linux-image-generic-lts-raring and linux-headers-generic-lts-raring
which bring the latest kernel. This method is easier since no kernel
version is required.

lebauce/edeploy,redhat-cip/edeploy,lebauce/edeploy,enovance/edeploy,redhat-cip/edeploy,enovance/edeploy,lebauce/edeploy,lebauce/edeploy,redhat-cip/edeploy,redhat-cip/edeploy,enovance/edeploy,enovance/edeploy