Use sampleRepo from parent class in GitHooksTest
Use sampleRepo from parent class in GitHooksTest

No need to create yet another sample repository when there is already
a sample repo being created in the parent class of this test.

MarkEWaite/git-plugin,MarkEWaite/git-plugin,jenkinsci/git-plugin,MarkEWaite/git-plugin,jenkinsci/git-plugin,jenkinsci/git-plugin,jenkinsci/git-plugin,MarkEWaite/git-plugin