Merge branch 'dryad' into demo

Change-Id: If73ceb60dcb3e83d0cabb46a063643444fcb2f74

diff --cc dryadjobmanager.go
Simple merge

diff --cc manager/dryad_job.go
index 59b0607,c56134c..726263e
--- 1/manager/dryad_job.go
--- 2/manager/dryad_job.go
+++ b/manager/dryad_job.go
@@@ -54,8 -54,8 +54,8 @@@ func newDryadJobWithCancel(job JobID, c
  
  // newDryadJob creates an instance of dryadJob and starts a goroutine
  // executing phases of given job implemented by provider of DryadJobRunner interface.
 -func newDryadJob(job JobID, rusalka Dryad, changes chan<- DryadJobStatusChange) *dryadJob {
 +func newDryadJob(job JobID, rusalka Dryad, conf Config, changes chan<- DryadJobStatusChange) *dryadJob {
-       session := dryad.NewSessionProvider(rusalka)
+       session, _ := dryad.NewSessionProvider(rusalka) // FIXME: Make use of returned error.
        device := dryad.NewDeviceCommunicationProvider(session)
  
        ctx, cancel := context.WithCancel(context.Background())