switch to BeforeSuite/AfterSuite

Signed-off-by: Max Brunsfeld <mbrunsfeld@pivotallabs.com>
clean up security test

Signed-off-by: Max Brunsfeld <mbrunsfeld@pivotallabs.com>
deps

Signed-off-by: Max Brunsfeld <mbrunsfeld@pivotallabs.com>
new streaming in/out interface

now returns an io.Reader and io.WriteCloser instead of consuming from one

Signed-off-by: Max Brunsfeld <mbrunsfeld@pivotallabs.com>