* implemented trait attach, get application
* implemented API for trait detach and fix trait detach issue
* implemeted API add/sync/list capability center
* implemented API capability add/remove/list
* update test-cases according to new cli style
* merge two ginkgo describe to one as in github environment ginkgo does NOT follow the order of describes
* merge two ginkgo describe to one as in github environment ginkgo does NOT follow the order of describes
* Show trait type in `app:ls`
Use trait type instead of its name in application list.
Fix app:status issue and refactor code
Fix#90
* Update pkg/cmd/status.go
Co-authored-by: Sun Jianbo <wonderflow.sun@gmail.com>
* followed comments to move some basic traits related functions to system.go
Co-authored-by: Sun Jianbo <wonderflow.sun@gmail.com>