Move to new ix_values system

[Ornias1993]

Description

IX Official changed the way they handled values, the new system has 3 values files:

• test_values.yaml (the values.yaml run during tests, because tests can't use IX specific questions.yaml related settings)
• ix_values.yaml (gets added on top of questions.yaml, without much validation. Can be used for images and tags for example)
• default_values.yaml (optional place to highlight the default config in questions.yaml, a bit redundant imho)

It also includes the following other changes:

• Add tests for hostNetwork
• add hostNetwork option to all charts
• Link dnsPolicy with hostNetwork setting
• Create standardised groups for questions.yaml
• Add unlimited user-defined storage to all charts (should cover your handbreak chart @stavros-k )

Fixes: #164
Fixes: #217
Fixes: #234

Type of change

• Feature/App addition
• Bugfix
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Refactor of current code

How Has This Been Tested?

Manually and automatically

Notes:

Possible breaking changes:
Env vars are NOT allowed to be in the values.yaml or ix_values.yaml (they wheren't before either) so are removed. If charts break, thats for their respective maintainers to fix.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests to this description that prove my fix is effective or that my feature works

[Ornias1993]

TODO:

• Go over the documentation and append where needed

[stavros-k]

There is some huge updates going on these days! (yay!!) I'll let some days to pass so most major changes are merged and then test my 2 charts and start making more!

[Ornias1993]

@stavros-k Awesome, this should be the last big change for now thats relevant for building charts.

As:

• I'm not sure if (and when) i'm going to rework the "ports" section (I might never)
• The Portal rework is relatively minor impact as you're ignoring the portal section already
• The rest of the planned work is "under the hood" of other charts, the common chart or CI :)

Be aware:
This is merging into staging, not master.
Staging is a branch that is not compatible with 21.02ALPHA and will be merged as soon as 21.04 launches. Consider everything merged into staging to be "merged".

[truecharts-admin]

This PR is locked to prevent necro-posting on closed PRs. Please create a issue or contact staff on discord if you want to further discuss this