Duplicated TLD returned by `utils.get_urls` (eg: "github.com.com")

[tdruez]

Initially reported at aboutcode-org/scancode.io#1753

Following investigations, the culprit is the utils.get_vcs_based_urls function.

In the function, a ".com" string is always forced even if already part of the value, see for example:

from go_inspector.binary import utils
from packageurl import PackageURL

purl_str = "pkg:golang/github.com/rclone/rclone@v1.70.3%2Bdirty"
purl = PackageURL.from_string(purl_str)

utils.get_vcs_based_urls(purl)

Results:

{'bug_tracking_url': 'https://github.com.com/rclone/rclone/issues',
 'code_view_url': 'https://github.com.com/rclone/rclone',
 'homepage_url': 'https://github.com.com/rclone/rclone',
 'vcs_url': 'git+https://github.com.com/rclone/rclone.git'}

Expected:

{'bug_tracking_url': 'https://github.com/rclone/rclone/issues',
 'code_view_url': 'https://github.com/rclone/rclone',
 'homepage_url': 'https://github.com/rclone/rclone',
 'vcs_url': 'git+https://github.com/rclone/rclone.git'}