Flag to only show old Charts

[markandersontrocme]

Is your feature request related to a problem? Please describe.
We have a lot of charts in our cluster and it would be nice to be able to find only the ones that are on an old version, so hiding all the ones that are Old false.

Describe the solution you'd like
A flag when you run nova find to only show old charts

Describe alternatives you've considered
I can get it working with awk commands but would be nice to have it built in

[sudermanjr]

I love this idea. Thanks!

[markandersontrocme]

@sudermanjr I'll give this a look today, would --show-old be a good flag?

[sudermanjr]

This slipped under the radar, apologies. I'll leave that determination up to the Codeowners, @rbren and @makoscafee

Thanks for the PR!