adds an int test that updates a unit with only one slice (#233)
adds an int test that updates a unit with only one slice (#233)

* adds an int test that updates a unit with only one slice

* more why text - removes sleep times

* remove duplicate status call

* adds sleep back in to give fleet time to get consistent, otherwise tests will fail sometimes.

giantswarm/inago,giantswarm/inago,giantswarm/inago,giantswarm/inago,giantswarm/inago