"publish" attribute should be removed from entities which are not packages

The [docs on actions](https://github.com/openwhisk/openwhisk/blob/master/docs/actions.md) do not include any information about the --shared option
The cli just says that it is a boolean:
`usage: wsk-script.py action create [-h] [-u AUTH] [--docker] [--copy]
[--sequence] [--lib LIB]
**[--shared [{yes,no}]]**
[-a ANNOTATION ANNOTATION] [-p PARAM PARAM]
[-t TIMEOUT] [-m MEMORY]
name artifact`
It is not clear what you would use this for.