slapos_jio: correctly save instance parameters when requesting new instance

9 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
passed SlapOS.Eggs.UnitTest-Master.Python2

00:39:10

passed SlapOS.Eggs.UnitTest-Master.Python3

00:24:46

passed SlapOS.Eggs.UnitTest-Master.Python2

00:37:31

failed SlapOS.Eggs.UnitTest-Master.Python2

00:18:39

passed SlapOS.Eggs.UnitTest-Master.Python2

passed SlapOS.Eggs.UnitTest-Master.Python3

00:14:27

passed SlapOS.Eggs.UnitTest-Master.Python3

00:25:46

passed SlapOS.Eggs.UnitTest-Master.Python3

00:20:46

passed SlapOS.Eggs.UnitTest-Master.Python3

00:16:00