expose RenderedProviderName to templating

[jacobbednarz]

Updates the templating variables to include RenderedProviderName which is the
value from --rendered-provider-name when invoking generate.

Allows doing the following in templates resulting in a nicer docs experience.

page_title: "{{.Name}} {{.Type}} - {{.RenderedProviderName}}"

Output:

# old
page_title: "Example Resource - terraform-provider-cloudflare"

# proposed
page_title: "Example Resource - Cloudflare"

[detro]

Hey @jacobbednarz - I really appreciate the effort you are putting in to fix the RenderedProviderName issue and also bring this feature end-2-end.

Can you confirm this is now working as expected, and that RenderedProviderName is optional only (i.e. existing setups won't see any change)? I'll try to do the verification myself too, but another pair of eyes would help.

Then we can cut 0.9.1.

[jacobbednarz]

from my debugging and test cases, this is now looking complete as a new optional field that is:

• available with individual custom templates; and
• rendered in templates when the variable is used.

if you'd like to run some tests yourself, check out https://github.com/cloudflare/terraform-provider-cloudflare where I have a make target (make docs using a custom provider name) working on my fork with both of these patches that will eventually land in 0.9.1.

[jacobbednarz]

note: I couldn't see any of the other customisation flags needing to be exposed to the generation process so I left them. that may be the only thing potentially missing if someone has a use for them.