Expose values in kapp-controller package

[praveenrewar]

What this PR does / why we need it:

Expose values in kapp-controller package. Release on fork.

Which issue(s) this PR fixes:

Fixes #

Does this PR introduce a user-facing change?

- Expose more values in kc package.
- Breaking change: Use lowerCamelCase for existing values.

Additional Notes for your reviewer:

Review Checklist:

• Follows the developer guidelines
• Relevant tests are added or updated
• Relevant docs in this repo added or updated
• Relevant carvel.dev docs added or updated in a separate PR and there's
  a link to that PR
• Code is at least as readable and maintainable as it was before this
  change

Additional documentation e.g., Proposal, usage docs, etc.:

[neil-hickey]

Nice nice, thanks for this @praveenrewar !

For future us... we opted for renaming the existing values to use the lowerCamelCase so as not to have two different styles of keys. Given on March 8th, we had one download of the kc bundle over the last month. We agreed that this was better to break now while noone is using it :D

[praveenrewar]

While testing the kc package, I noticed that I had used

- #@ "-metricsBindAddress={}".format(data.values.metricsBindAddress)

instead of

- #@ "-metrics-bind-address={}".format(data.values.metricsBindAddress)

I have updated it now.
@neil-hickey Do you want to take a look at it again or I can go ahead and merge it?

[rohitagg2020]

LGTM