Add interface for state operations

state.go

@@ -0,0 +1,12 @@
+package scheduler
+
+// StateOps is the interface for refreshing and interacting with the local
+// ECS state.
+type StateOps interface {
+	Initialize(clusterName string, ecs *ecs.ECS, logger Logger) *State
+	FindLocationsForTaskDefinition(td string) *[]ContainerInstance
+	FindTaskDefinition(td string) TaskDefinition
+	RefreshClusterState()
+	RefreshContainerInstanceState()
+	RefreshTaskState()
+}