add lxc integration tests
modules.lxc: fix referenced before assignment error
use a faster template (sshd) for lxc integration tests
Merge pull request #14097 from mgwilliams/lxc

add lxc integration tests
Add headers to the 2014.7.1 to release notes, more to come
clean up stacks better in raetchannel
Merge remote-tracking branch 'upstream/develop' into sam_raet_50
Now Jobbers only use one LaneStack in the channel