Add missing dependency for lxc-extra.

BUG: https://bugzilla.redhat.com/show_bug.cgi?id=1193438
(cherry picked from commit ef313d55d9)

vagrant-lxc.spec

@@ -2,7 +2,7 @@
 
 Name: %{vagrant_plugin_name}
 Version: 1.1.0
-Release: 6%{?dist}
+Release: 7%{?dist}
 Summary: LXC provider for vagrant
 Group: Development/Languages
 License: MIT
@@ -21,6 +21,7 @@ Requires(preun): vagrant
 Requires: ruby(release)
 Requires: ruby(rubygems)
 Requires: lxc
+Requires: lxc-extra
 Requires: vagrant
 
 BuildRequires: vagrant
@@ -126,6 +127,9 @@ getent group vagrant >/dev/null || groupadd -r vagrant
 %{vagrant_plugin_instdir}/vagrant-spec.config.rb
 
 %changelog
+* Wed Feb 18 2015 Michael Adam <madam@redhat.com> - 1.1.0-7
+- Add missing dependency for lxc-extra (BZ #1193438).
+
 * Thu Jan 29 2015 Michael Adam <madam@redhat.com> - 1.1.0-6
 - Make some non-standard perms explicit in the files section.
 - Own directories that we create.