add a scale down test
add a scale down test

This change adds a clause to scale down the cluster after scaling up.
Also changes the cluster helper check to look for the exact number of
pods instead of allowing for an overage. This corrects an error when
scaling down.

crobby/oshinko-cli,radanalyticsio/oshinko-cli,crobby/oshinko-cli,tmckayus/oshinko-cli,tmckayus/oshinko-cli,radanalyticsio/oshinko-cli,crobby/oshinko-cli,tmckayus/oshinko-cli,radanalyticsio/oshinko-cli