Support for a pre-packaged chart in frigate

[raul1991]

In my case , I usually update my chart ie pack it properly (including its dependent charts) so I would like frigate to just go through them and just dump the values from them that way it already does. The only thing would be to NOT run the repo update and the dep update commands.

One thing to note here is that the above commands only slow down the whole recursion drastically (I had to wait for 20 mins). With this improvement I also would like to propose a flag called --no-update which would not invoke the the aforementioned commands during the traversal.

[raul1991]

I have written something that can deal with this scenario and I am putting it up for review soon and will refactor it as we all discuss in this forum.