sdk: Host.getRebootAfterInstallation() returns False (null was expected) #985842

Change-Id: I20be53c2b1f78efb92c4d849854d45632ce9879f
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=985842
Signed-off-by: Michael pasternak <mpastern@redhat.com>