Rename a bunch of "Make" functions to "New"

Also rename some to other names that make better reading.  There are still a
bunch of "make" functions but they do things like assemble a string from parts
or build an array of things.  It seemed that "make" there seemed fine.  "New"
is for "constructors".

pkg/scheduler/random.go

@@ -29,7 +29,7 @@ type RandomScheduler struct {
 	randomLock sync.Mutex
 }
 
-func MakeRandomScheduler(random *rand.Rand) Scheduler {
+func NewRandomScheduler(random *rand.Rand) Scheduler {
 	return &RandomScheduler{
 		random: random,
 	}