Cannot add a registry interactively

[rhuss]

When no registry is set, and then doing a kn func deploy I am asked for the registry name. However, I see the following error there:

 9:02 ➜ kn func deploy --verbose
A registry for function images is required. For example, 'docker.io/tigerteam'.
X Sorry, your reply was invalid: invalid registry ["docker.io/rhuss"]: name required
? Registry for function images:

Workaround is to specify the data either via --registry or via FUNC_REGISTRY.

[matejvasek]

@gauron99 also would you look into this too, please?