fix(report): use OS information for OS packages purl in github template

[DmitriyLewen]

Description

OS package purl should contains OS name and distro field
e.g. for deb - https://github.com/package-url/purl-spec/blob/master/PURL-TYPES.rst#deb

before: pkg:apk/alpine-baselayout@3.1.2-r0
after: pkg:apk/alpine/alpine-baselayout@3.1.2-r0?arch=x86_64\u0026distro=3.10.2

Checklist

• I've read the guidelines for contributing to this repository.
• I've followed the conventions in the PR title.
• I've added tests that prove my fix is effective or that my feature works.
• I've updated the documentation with the relevant information (if needed).
• I've added usage information (if the PR introduces new options)
• I've included a "before" and "after" example to the description (if the PR is a user interface change).

[knqyf263]

apk is not the case
https://github.com/package-url/purl-spec/blob/master/PURL-TYPES.rst#apk

[knqyf263]

There is no default package repository: this should be implied either from the distro qualifiers key or using a repository base url as repository_url qualifiers key.

Oh, there is