let the driver decide which desktop needs a username for login, not the test
prepare some more tests for sle11
import mouse_hide
Merge pull request #180 from os-autoinst/coolo_prepare_more_sle11

prepare some more tests for sle11
move registering scc steps to lib, and check IMPORT_UNTRUSTED_KEY var to decide do we untrust that key or not
Merge branch 'master' into sle12