avoid using test.ping on a non-existent minion
runners.lxc: only use test.ping when needed
runners.lxc: move instatiation of Key outside the loop
Fix critical filelist infinite loop race
Merge pull request #14290 from mgwilliams/lxc-check-seed

avoid using test.ping on a non-existent minion
Merge pull request #14345 from makinacorpus/2014.7

Fix critical filelist infinite loop race
Merge branch '2014.7' into develop
Merge pull request #14364 from thatch45/develop

Bring develop inline