fix(bulk-import): use git provider host from configuration

[AndrienkoAleksandr]

Hey, I just made a Pull Request!

Prefer to use use configuration integration to determine approval tool, instead of hard-coded "gitlab" host.

What does this pull request fix

Fix issue: https://issues.redhat.com/browse/RHIDP-9359

✔️ Checklist

• A changeset describing the change and affected packages. (more info)
• Added or Updated documentation
• Tests for new functionality and regression tests for bug fixes
• Screenshots attached (for UI changes)

[rhdh-gh-app]

Missing Changesets

The following package(s) are changed by this PR but do not have a changeset:

• @red-hat-developer-hub/backstage-plugin-bulk-import-backend

See CONTRIBUTING.md for more information about how to add changesets.

Changed Packages

Package Name	Package Path	Changeset Bump	Current Version
@red-hat-developer-hub/backstage-plugin-bulk-import-backend	workspaces/bulk-import/plugins/bulk-import-backend	none	v6.5.1

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[lholmquist]

This is probably the better way to do it, but what happens if both git and gitlab are configured at the same time?

[AndrienkoAleksandr]

Yes, I initially tested this PR with both GitLab and GitHub enabled at the same time, and it worked in my case.
If you see a scenario where it might not work, could you please share more details?

I created this PR because I expected that the bulk-import should work with a configuration like:

integrations:
  gitlab:
    - host: gitlab.com
      token: 'some-token'
    - host: my.personal.gitlab.com
      token: 'some-token'
  github:
    - host: github.com
      token: 'github token'

[lholmquist]

i guess i was confused on if you had both gitlab and github configured, then you tried to import repo's from github, it looks like the code will see the gitlab configuration and then return thinking it should import from gitlab?