Merge pull request #40 from aplanas/master

Rename check_DTMF to assert_DTMF.
rename $ENV to $vars
rename checkEnv to check_var
Merge pull request #41 from nilxam/rename_vars

rename $ENV to $vars
make sure the reboot button highlighted before send ret
fix yast2_bootloader test
fix package name for thunderbird
Merge pull request #42 from nilxam/gnome_dialog

make sure the reboot button highlighted before send ret
Merge pull request #43 from os-autoinst/two_fixes

Two fixes
don't eject the cd, we need to verify the medium not factory-snapshot
Merge pull request #44 from os-autoinst/dont_eject_cd

don't eject the cd, we need to verify the medium not factory-snapshot