Authentication support for remote charts repositories.

Doesn't cahnge the rendered markdown, but it makes the styling consistent with the rest of the docs.

update the documentation to refere to GnuPG v2 instead of latest GnuPG

The latest GnuGP tool (https://gnupg.org/download/)  is now storing keyring in a new format file 'kbx' instead of 'gpg' which make the current documentation incomplete for a new user. The propose pull request consists of adding documentation to explain how to generate a gpg using the latest GnuGP tool

https://github.com/balboah/helm-hashtag

docs(helm): Added kubeVersion to documentation and examples.
Adjusted wording for the Chart.kubeVersion description
Removing redundant wording for Chart.kubeVersion description

`helm version --template` prints the client and server version info in
the provided template format.

Updates helm reset error message to clarify that --force will not remove releases.

Closes #3394

Brings it in line with the rest of the documentation in docs/

typo error
comand --> command

Add a sentence to balance the advice about not quoting integers as it can cause headaches when applied to env variables.