Added dnsmasq leases file location for libvirt
Set container utsname to configured hostname per default

Previously, the utsname of a machine was set to the vagrant machine ID.
As the utsname represents the hostname of the machine and is independent
from the name of the actual LXC container, the hostname that was
specified in the Vagrantfile should be used instead. If no hostname is
provided, the machine ID will be used like before.

Additionally, this will trigger the DHCP client in the container to send
the correct hostname to the DHCP server on the first request at boot.
Vagrant sets the configured hostname only after the network is up. If
for example automatic DNS updates are configured, the right DNS record
will be created every time.
Lock vagrant to 1.5.1
gemspec: Add post install message
Note GH-151 on CHANGELOG
action: Keep old behavior of erroring on `vagrant ssh -c` instead of just showing a message
Merge branch 'utsname-hostname' of github.com:fpletz/vagrant-lxc
Nitpick
Merge branch 'master' of github.com:vorlock/vagrant-lxc
Note GH-251 and GH-253 on CHANGELOG
This is no longer needed
synced_folder: Support for mount_options
Update CHANGELOG
synced_folder: Warn in case `:group` or `:owner` are specified [GH-196]
synced_folder: Fix mount_options on Vagrant 1.4+
core: Make `lxc-template` optional [GH-254]
lxc-template: ensure `/var/lock/subsys` exists before creating lock