use constant of larrow resource file
clean active_support files for dependencies
ensure node start
delete resource file when cleanup
support verbose mode.
remove ping method
make a dummy ssh before rsync
mv test cases to unit_test
use nmap to detect the instance's port
make output clean
use larrow-qingcloud on v0.0.2
change version: 0.0.2 -> 0.0.3
update release note
Merge branch 'version_0_0_3'

* clean dependency: remove `active_support`
* open verbose mode on tests
* delete resource file when cleanup
* ensure node start( use `nmap` to detect)
* use larrow-qingcloud v0.0.2