* master: (66 commits)
Use a single implementation of GenerateUUID
scheduler: use update strategy for rolling updates
nomad: adding helper structs
scheduler: Adding CreateEval to Planner
nomad: worker supports create eval
nomad: guard eval creation based on parent eval
nomad: adding Eval.Create endpoint
nomad: support time wait for evaluations
nomad: adding fields to cause an evaluation to 'wait'
scheduler: support in-place allocation updates
scheduler: util method to diff task groups
nomad: helper struct func
nomad: PopUpdate should minimize plan size
nomad: adding helper to manipulate plans
scheduler: share context and stack
scheduler: allow updating the base nodes
scheduler: allow StaticIterator to update base set
scheduler: pull node shuffle into util
nomad: adding node GC
nomad: using Raft StartAsLeader to make tests faster
...
* upstream/master:
Removed debug logging
Added tests for docker, improved logging, and fixed a few bugs
Added initial implementation for the docker driver; tests pending
