remove condition preventing github enterprise instances being returned

[evilmilo]

Ensure github-plugin can auto register hooks with enterprise git, remove the condition
which only fetched GitHub instances where the site was official github site, otherwise
returned empty collection

[buildhive]

Jenkins » github-plugin #51 SUCCESS
This pull request looks good
(what's this?)

[jenkinsadmin]

Thank you for a pull request! Please check this document for how the Jenkins project handles pull requests

[elordahl]

I just made a pull request with the exact same code. Glad to see i'm not alone---I'll cancel my pull request, and ensure to check existing pull requests first :)

Any plans to pull this in?

[jprosevear]

I think we are in you-should-just-ask-for-commit-access territory. Unfortunately the buildhive build is no longer available for testing.

[jglick]

@jprosevear moved to jenkins.ci.cloudbees.com.

[jprosevear]

@jglick these PRs are too old to have a cached build afaict. This:
https://jenkins.ci.cloudbees.com/job/plugins/job/github-plugin/20/

Is the oldest build available.

[jglick]

Right; not sure if pushing a new commit to this PR (e.g., git merge master) would suffice to trigger a PR build, or if only newly filed PRs would get built.

[oleg-nenashev]

Commented the new PR (#37).
What PR should we close to remove the duplication?

[jprosevear]

Close #37 - I only opened it to trigger a new build.

[kohsuke]

Closed #37. I investigated the security concern from @oleg-nenashev in that PR, and I think it is safe.