Always set git user name/email in repo helper

We were having tests fail in some CI contexts due to a lack of
configured user name/email for git. Solve this by ensuring all
repositories using the `repo` helper in specs have a local user name and
email defined.

Change-Id: I69ead11de15e83967a4b85a0091b5845ca8392cd
Reviewed-on: http://gerrit.causes.com/38044
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane@causes.com>

Author: Shane da Silva

spec/support/git_spec_helpers.rb

@@ -7,7 +7,13 @@ module GitSpecHelpers
   def repo(name = 'some-repo', &block)
     directory(name) do
       `git init --template=""` # Ensure no template directory is applied
+
       `mkdir -p .git/hooks` # Since we don't specify template, need to create ourselves
+
+      # Need to define user info since some CI contexts don't have defaults set
+      `git config --local user.name "Overcommit Tester"`
+      `git config --local user.email "overcommit@example.com"`
+
       block.call if block_given?
     end
   end