Merge pull request #1 from mkosola/master

Add host based test support
add test_packages to img_test_vm.sh script

this allows to execute just one test package. In case the test package
is a pattern, the img_test_vm.sh runs all available tests on the device.
Merge pull request #2 from d0b3rm4n/master

add test_packages to img_test_vm.sh as argument