Merge branch 'ab/test-without-templates'

Tweak tests so that they still work when the "git init" template did not create .git/info directory. * ab/test-without-templates: tests: don't assume a .git/info for .git/info/sparse-checkout tests: don't assume a .git/info for .git/info/exclude tests: don't assume a .git/info for .git/info/refs tests: don't assume a .git/info for .git/info/attributes tests: don't assume a .git/info for .git/info/grafts tests: don't depend on template-created .git/branches t0008: don't rely on default ".git/info/exclude"