wsk cli does not pass annotations for rules

@erezh16 commented on [Sat Mar 16 2019](https://github.com/apache/incubator-openwhisk/issues/4354)

## Environment details:

* vagrant

## Steps to reproduce the issue:

1. wsk trigger create testTrigger
2. wsk rule create testRule testTrigger /whisk.system/utils/echo -a testAnn '{"key":"value"}' -v

## Provide the expected results and outputs:
Output request *should* contain the annotation testAnn

## Provide the actual results and outputs:
Output request does not contain the annotation testAnn
Response also does not contain the annotation testAnn

## Additional information you deem important:
* Seems like a stable issue

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@rabbah commented on [Sun Mar 17 2019](https://github.com/apache/incubator-openwhisk/issues/4354#issuecomment-473719864)

This is a CLI bug - the request body does not post the annotations.