LRP convergence kicks desireds and stops bad actuals
refactor lrp converge
enforce specifying executorIDs when requesting a running LRP
StopInstance -> StopLRPInstance
Degluteate

Signed-off-by: Onsi Fakhouri <onsi@pivotallabs.com>
stop lrp instances expire via ttl
auctions have UpdatedAt timestamps
add start auction converger