Allow setting python::version in hiera to Integer

[tj-cisco]

Pull Request (PR) description

Allow setting python::version in hiera to an integer value to match the default option in install.pp. This is required for FreeBSD.

This Pull Request (PR) fixes the following issues

Fixes #731
Semi related to #688 as the solution in this PR does not work when configured via hiera.

[alexjfisher]

Was there an issue quoting the version 'number' in hiera? Version numbers really are strings and not numbers. They just sometimes look like integers or perhaps floats, but 1.0.0 could never be either.

[tj-cisco]

Was there an issue quoting the version 'number' in hiera? Version numbers really are strings and not numbers. They just sometimes look like integers or perhaps floats, but 1.0.0 could never be either.

TBH we never tried quoting it, but it probably would have matched the first option in the pattern. This fix doesn't address python::version: 3.9 as an unquoted string which the parser will treat as a Float, a semvar style version number will be treated as a string by the parser when it is unquoted which will match the first option in the pattern as the "python" prefix is optional.