Make default timeout five minutes for tests
Make default timeout five minutes for tests

This change modifies all of the "try_until" variants in the
test lib so that the default timeout is 5 minutes with a
0.5 second repeat rate. The goal is to see if this helps
Jenkins tests.

rimolive/oshinko-s2i,tmckayus/oshinko-s2i,tmckayus/oshinko-s2i,rimolive/oshinko-s2i,rimolive/oshinko-s2i,tmckayus/oshinko-s2i