Replace the binary Wsk with REST interface WskRest

All the non-CLI related tests should sunset the wsk, and re-implement them with wskrest.

```
import common.wsk
val wsk = new Wsk
```

need to be changed to

```
import common.rest.WskRest
val wsk = new WskRest
```

plus there may be changes to the rest of the tests as well, since the response result may have been changed.