v1.0.2 is stripping comments from values.yaml

[derlin]

Hi there ! First, thank you for this very useful plugin.

The latest release v1.0.2 added (fixed) the possibility to override values upon push.
The problem is that by rewriting values.yaml, all comments and new lines are stripped from the file.
This is very problematic as it goes against Helm good practices.

Example of values.yaml pushed using 1.0.1:

# @Copyright YYY
# This file defines the default values used by the XX-library.
# To reference them in your own Chart templates, use `.Values.XXX`.
# To override any of them in your own values.xml, do not forget the "XX" key.

# name of the project, this is required
project: null
# some other property, blabla documentation
other: 12

The same values.yaml pushed to artifactory using 1.0.2:

project:null
other: 12

I understand keeping comments makes the override of values difficult.
However, I would expect that if I don't use the override feature (not -s options passed), the values.yaml should be pushed unchanged.